diff --git a/app-nia-catalog/src/main/java/com/google/samples/apps/niacatalog/NiaCatalogActivity.kt b/app-nia-catalog/src/main/kotlin/com/google/samples/apps/niacatalog/NiaCatalogActivity.kt
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diff --git a/app-nia-catalog/src/main/java/com/google/samples/apps/niacatalog/ui/Catalog.kt b/app-nia-catalog/src/main/kotlin/com/google/samples/apps/niacatalog/ui/Catalog.kt
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diff --git a/app/src/androidTest/java/com/google/samples/apps/nowinandroid/ui/NavigationTest.kt b/app/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/ui/NavigationTest.kt
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diff --git a/app/src/androidTest/java/com/google/samples/apps/nowinandroid/ui/NavigationUiTest.kt b/app/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/ui/NavigationUiTest.kt
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diff --git a/app/src/androidTest/java/com/google/samples/apps/nowinandroid/ui/NiaAppStateTest.kt b/app/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/ui/NiaAppStateTest.kt
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diff --git a/app/src/main/java/com/google/samples/apps/nowinandroid/MainActivity.kt b/app/src/main/kotlin/com/google/samples/apps/nowinandroid/MainActivity.kt
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diff --git a/app/src/main/java/com/google/samples/apps/nowinandroid/NiaApplication.kt b/app/src/main/kotlin/com/google/samples/apps/nowinandroid/NiaApplication.kt
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diff --git a/app/src/main/java/com/google/samples/apps/nowinandroid/di/JankStatsModule.kt b/app/src/main/kotlin/com/google/samples/apps/nowinandroid/di/JankStatsModule.kt
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diff --git a/app/src/main/java/com/google/samples/apps/nowinandroid/navigation/NiaNavHost.kt b/app/src/main/kotlin/com/google/samples/apps/nowinandroid/navigation/NiaNavHost.kt
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diff --git a/app/src/main/java/com/google/samples/apps/nowinandroid/navigation/TopLevelDestination.kt b/app/src/main/kotlin/com/google/samples/apps/nowinandroid/navigation/TopLevelDestination.kt
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diff --git a/app/src/main/java/com/google/samples/apps/nowinandroid/ui/NiaApp.kt b/app/src/main/kotlin/com/google/samples/apps/nowinandroid/ui/NiaApp.kt
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diff --git a/app/src/main/java/com/google/samples/apps/nowinandroid/ui/NiaAppState.kt b/app/src/main/kotlin/com/google/samples/apps/nowinandroid/ui/NiaAppState.kt
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diff --git a/app/src/testDemo/java/com/google/samples/apps/nowinandroid/ui/NiaAppScreenSizesScreenshotTests.kt b/app/src/testDemo/kotlin/com/google/samples/apps/nowinandroid/ui/NiaAppScreenSizesScreenshotTests.kt
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diff --git a/benchmarks/src/main/java/androidx/test/uiautomator/UiAutomatorHelpers.kt b/benchmarks/src/main/kotlin/androidx/test/uiautomator/UiAutomatorHelpers.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/GeneralActions.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/GeneralActions.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/Utils.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/Utils.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/baselineprofile/BaselineProfileGenerator.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/baselineprofile/BaselineProfileGenerator.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/bookmarks/BookmarksActions.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/bookmarks/BookmarksActions.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/foryou/ForYouActions.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/foryou/ForYouActions.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/foryou/ScrollForYouFeedBenchmark.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/foryou/ScrollForYouFeedBenchmark.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/interests/InterestsActions.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/interests/InterestsActions.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/interests/ScrollTopicListBenchmark.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/interests/ScrollTopicListBenchmark.kt
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rename from benchmarks/src/main/java/com/google/samples/apps/nowinandroid/interests/ScrollTopicListBenchmark.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/interests/ScrollTopicListPowerMetricsBenchmark.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/interests/ScrollTopicListPowerMetricsBenchmark.kt
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rename from benchmarks/src/main/java/com/google/samples/apps/nowinandroid/interests/ScrollTopicListPowerMetricsBenchmark.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/interests/TopicsScreenRecompositionBenchmark.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/interests/TopicsScreenRecompositionBenchmark.kt
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rename from benchmarks/src/main/java/com/google/samples/apps/nowinandroid/interests/TopicsScreenRecompositionBenchmark.kt
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diff --git a/benchmarks/src/main/java/com/google/samples/apps/nowinandroid/startup/StartupBenchmark.kt b/benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/startup/StartupBenchmark.kt
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rename from benchmarks/src/main/java/com/google/samples/apps/nowinandroid/startup/StartupBenchmark.kt
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diff --git a/core/analytics/src/demo/java/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsModule.kt b/core/analytics/src/demo/kotlin/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsModule.kt
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rename from core/analytics/src/demo/java/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsModule.kt
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diff --git a/core/analytics/src/main/java/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsEvent.kt b/core/analytics/src/main/kotlin/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsEvent.kt
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diff --git a/core/analytics/src/main/java/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsHelper.kt b/core/analytics/src/main/kotlin/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsHelper.kt
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rename from core/analytics/src/main/java/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsHelper.kt
rename to core/analytics/src/main/kotlin/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsHelper.kt
diff --git a/core/analytics/src/main/java/com/google/samples/apps/nowinandroid/core/analytics/NoOpAnalyticsHelper.kt b/core/analytics/src/main/kotlin/com/google/samples/apps/nowinandroid/core/analytics/NoOpAnalyticsHelper.kt
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rename from core/analytics/src/main/java/com/google/samples/apps/nowinandroid/core/analytics/NoOpAnalyticsHelper.kt
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diff --git a/core/analytics/src/main/java/com/google/samples/apps/nowinandroid/core/analytics/StubAnalyticsHelper.kt b/core/analytics/src/main/kotlin/com/google/samples/apps/nowinandroid/core/analytics/StubAnalyticsHelper.kt
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rename from core/analytics/src/main/java/com/google/samples/apps/nowinandroid/core/analytics/StubAnalyticsHelper.kt
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diff --git a/core/analytics/src/main/java/com/google/samples/apps/nowinandroid/core/analytics/UiHelpers.kt b/core/analytics/src/main/kotlin/com/google/samples/apps/nowinandroid/core/analytics/UiHelpers.kt
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diff --git a/core/analytics/src/prod/java/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsModule.kt b/core/analytics/src/prod/kotlin/com/google/samples/apps/nowinandroid/core/analytics/AnalyticsModule.kt
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diff --git a/core/analytics/src/prod/java/com/google/samples/apps/nowinandroid/core/analytics/FirebaseAnalyticsHelper.kt b/core/analytics/src/prod/kotlin/com/google/samples/apps/nowinandroid/core/analytics/FirebaseAnalyticsHelper.kt
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diff --git a/core/common/src/main/java/com/google/samples/apps/nowinandroid/core/network/NiaDispatchers.kt b/core/common/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/NiaDispatchers.kt
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diff --git a/core/common/src/main/java/com/google/samples/apps/nowinandroid/core/network/di/CoroutineScopesModule.kt b/core/common/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/di/CoroutineScopesModule.kt
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diff --git a/core/common/src/main/java/com/google/samples/apps/nowinandroid/core/network/di/DispatchersModule.kt b/core/common/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/di/DispatchersModule.kt
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rename from core/common/src/main/java/com/google/samples/apps/nowinandroid/core/network/di/DispatchersModule.kt
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diff --git a/core/common/src/main/java/com/google/samples/apps/nowinandroid/core/result/Result.kt b/core/common/src/main/kotlin/com/google/samples/apps/nowinandroid/core/result/Result.kt
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diff --git a/core/common/src/test/java/com/google/samples/apps/nowinandroid/core/result/ResultKtTest.kt b/core/common/src/test/kotlin/com/google/samples/apps/nowinandroid/core/result/ResultKtTest.kt
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diff --git a/core/data-test/src/main/java/com/google/samples/apps/nowinandroid/core/data/test/AlwaysOnlineNetworkMonitor.kt b/core/data-test/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/test/AlwaysOnlineNetworkMonitor.kt
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rename from core/data-test/src/main/java/com/google/samples/apps/nowinandroid/core/data/test/AlwaysOnlineNetworkMonitor.kt
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diff --git a/core/data-test/src/main/java/com/google/samples/apps/nowinandroid/core/data/test/TestDataModule.kt b/core/data-test/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/test/TestDataModule.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/SyncUtilities.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/SyncUtilities.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/SyncUtilities.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/di/DataModule.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/di/DataModule.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/di/DataModule.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/di/UserNewsResourceRepositoryModule.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/di/UserNewsResourceRepositoryModule.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/di/UserNewsResourceRepositoryModule.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/model/NewsResource.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/model/NewsResource.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/model/NewsResource.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/model/RecentSearchQuery.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/model/RecentSearchQuery.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/model/RecentSearchQuery.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/model/Topic.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/model/Topic.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/model/Topic.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/AnalyticsExtensions.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/AnalyticsExtensions.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/AnalyticsExtensions.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/AnalyticsExtensions.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/CompositeUserNewsResourceRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/CompositeUserNewsResourceRepository.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/CompositeUserNewsResourceRepository.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/DefaultRecentSearchRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/DefaultRecentSearchRepository.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/DefaultRecentSearchRepository.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/DefaultSearchContentsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/DefaultSearchContentsRepository.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/DefaultSearchContentsRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/DefaultSearchContentsRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/NewsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/NewsRepository.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/NewsRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/NewsRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstNewsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstNewsRepository.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstNewsRepository.kt
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diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstTopicsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstTopicsRepository.kt
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rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstTopicsRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstTopicsRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstUserDataRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstUserDataRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstUserDataRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstUserDataRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/RecentSearchRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/RecentSearchRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/RecentSearchRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/RecentSearchRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/SearchContentsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/SearchContentsRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/SearchContentsRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/SearchContentsRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/TopicsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/TopicsRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/TopicsRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/TopicsRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/UserDataRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/UserDataRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/UserDataRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/UserDataRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/UserNewsResourceRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/UserNewsResourceRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/UserNewsResourceRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/UserNewsResourceRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeNewsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeNewsRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeNewsRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeNewsRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeRecentSearchRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeRecentSearchRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeRecentSearchRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeRecentSearchRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeSearchContentsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeSearchContentsRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeSearchContentsRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeSearchContentsRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeTopicsRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeTopicsRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeTopicsRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeTopicsRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeUserDataRepository.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeUserDataRepository.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeUserDataRepository.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/fake/FakeUserDataRepository.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/util/ConnectivityManagerNetworkMonitor.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/util/ConnectivityManagerNetworkMonitor.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/util/ConnectivityManagerNetworkMonitor.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/util/ConnectivityManagerNetworkMonitor.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/util/NetworkMonitor.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/util/NetworkMonitor.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/util/NetworkMonitor.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/util/NetworkMonitor.kt
diff --git a/core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/util/SyncManager.kt b/core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/util/SyncManager.kt
similarity index 100%
rename from core/data/src/main/java/com/google/samples/apps/nowinandroid/core/data/util/SyncManager.kt
rename to core/data/src/main/kotlin/com/google/samples/apps/nowinandroid/core/data/util/SyncManager.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/CompositeUserNewsResourceRepositoryTest.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/CompositeUserNewsResourceRepositoryTest.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/CompositeUserNewsResourceRepositoryTest.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/CompositeUserNewsResourceRepositoryTest.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/UserNewsResourceTest.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/UserNewsResourceTest.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/UserNewsResourceTest.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/UserNewsResourceTest.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/model/NetworkEntityKtTest.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/model/NetworkEntityKtTest.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/model/NetworkEntityKtTest.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/model/NetworkEntityKtTest.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstNewsRepositoryTest.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstNewsRepositoryTest.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstNewsRepositoryTest.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstNewsRepositoryTest.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstTopicsRepositoryTest.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstTopicsRepositoryTest.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstTopicsRepositoryTest.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstTopicsRepositoryTest.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstUserDataRepositoryTest.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstUserDataRepositoryTest.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstUserDataRepositoryTest.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/OfflineFirstUserDataRepositoryTest.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/repository/TestSynchronizer.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/TestSynchronizer.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/repository/TestSynchronizer.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/repository/TestSynchronizer.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNewsResourceDao.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNewsResourceDao.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNewsResourceDao.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNewsResourceDao.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNiaNetworkDataSource.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNiaNetworkDataSource.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNiaNetworkDataSource.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNiaNetworkDataSource.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestTopicDao.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestTopicDao.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestTopicDao.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestTopicDao.kt
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/database/model/PopulatedNewsResourceKtTest.kt b/core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/database/model/PopulatedNewsResourceKtTest.kt
similarity index 100%
rename from core/data/src/test/java/com/google/samples/apps/nowinandroid/core/database/model/PopulatedNewsResourceKtTest.kt
rename to core/data/src/test/kotlin/com/google/samples/apps/nowinandroid/core/database/model/PopulatedNewsResourceKtTest.kt
diff --git a/core/database/src/androidTest/java/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceDaoTest.kt b/core/database/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceDaoTest.kt
similarity index 100%
rename from core/database/src/androidTest/java/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceDaoTest.kt
rename to core/database/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceDaoTest.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/DaosModule.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/DaosModule.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/DaosModule.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/DaosModule.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/DatabaseMigrations.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/DatabaseMigrations.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/DatabaseMigrations.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/DatabaseMigrations.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/DatabaseModule.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/DatabaseModule.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/DatabaseModule.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/DatabaseModule.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/NiaDatabase.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/NiaDatabase.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/NiaDatabase.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/NiaDatabase.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceDao.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceDao.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceDao.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceDao.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceFtsDao.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceFtsDao.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceFtsDao.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/NewsResourceFtsDao.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/RecentSearchQueryDao.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/RecentSearchQueryDao.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/RecentSearchQueryDao.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/RecentSearchQueryDao.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/TopicDao.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/TopicDao.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/TopicDao.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/TopicDao.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/TopicFtsDao.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/TopicFtsDao.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/dao/TopicFtsDao.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/dao/TopicFtsDao.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceEntity.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceEntity.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceEntity.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceEntity.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceFtsEntity.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceFtsEntity.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceFtsEntity.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceFtsEntity.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceTopicCrossRef.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceTopicCrossRef.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceTopicCrossRef.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/NewsResourceTopicCrossRef.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/PopulatedNewsResource.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/PopulatedNewsResource.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/PopulatedNewsResource.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/PopulatedNewsResource.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/RecentSearchQueryEntity.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/RecentSearchQueryEntity.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/RecentSearchQueryEntity.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/RecentSearchQueryEntity.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/TopicEntity.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/TopicEntity.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/TopicEntity.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/TopicEntity.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/TopicFtsEntity.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/TopicFtsEntity.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/model/TopicFtsEntity.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/model/TopicFtsEntity.kt
diff --git a/core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/util/InstantConverter.kt b/core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/util/InstantConverter.kt
similarity index 100%
rename from core/database/src/main/java/com/google/samples/apps/nowinandroid/core/database/util/InstantConverter.kt
rename to core/database/src/main/kotlin/com/google/samples/apps/nowinandroid/core/database/util/InstantConverter.kt
diff --git a/core/datastore-test/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/test/TestDataStoreModule.kt b/core/datastore-test/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/test/TestDataStoreModule.kt
similarity index 100%
rename from core/datastore-test/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/test/TestDataStoreModule.kt
rename to core/datastore-test/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/test/TestDataStoreModule.kt
diff --git a/core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/ChangeListVersions.kt b/core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/ChangeListVersions.kt
similarity index 100%
rename from core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/ChangeListVersions.kt
rename to core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/ChangeListVersions.kt
diff --git a/core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/IntToStringIdsMigration.kt b/core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/IntToStringIdsMigration.kt
similarity index 100%
rename from core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/IntToStringIdsMigration.kt
rename to core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/IntToStringIdsMigration.kt
diff --git a/core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/ListToMapMigration.kt b/core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/ListToMapMigration.kt
similarity index 100%
rename from core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/ListToMapMigration.kt
rename to core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/ListToMapMigration.kt
diff --git a/core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/NiaPreferencesDataSource.kt b/core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/NiaPreferencesDataSource.kt
similarity index 100%
rename from core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/NiaPreferencesDataSource.kt
rename to core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/NiaPreferencesDataSource.kt
diff --git a/core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/UserPreferencesSerializer.kt b/core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/UserPreferencesSerializer.kt
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diff --git a/core/datastore/src/main/java/com/google/samples/apps/nowinandroid/core/datastore/di/DataStoreModule.kt b/core/datastore/src/main/kotlin/com/google/samples/apps/nowinandroid/core/datastore/di/DataStoreModule.kt
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diff --git a/core/datastore/src/test/java/com/google/samples/apps/nowinandroid/core/datastore/IntToStringIdsMigrationTest.kt b/core/datastore/src/test/kotlin/com/google/samples/apps/nowinandroid/core/datastore/IntToStringIdsMigrationTest.kt
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diff --git a/core/datastore/src/test/java/com/google/samples/apps/nowinandroid/core/datastore/ListToMapMigrationTest.kt b/core/datastore/src/test/kotlin/com/google/samples/apps/nowinandroid/core/datastore/ListToMapMigrationTest.kt
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diff --git a/core/datastore/src/test/java/com/google/samples/apps/nowinandroid/core/datastore/NiaPreferencesDataSourceTest.kt b/core/datastore/src/test/kotlin/com/google/samples/apps/nowinandroid/core/datastore/NiaPreferencesDataSourceTest.kt
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diff --git a/core/datastore/src/test/java/com/google/samples/apps/nowinandroid/core/datastore/UserPreferencesSerializerTest.kt b/core/datastore/src/test/kotlin/com/google/samples/apps/nowinandroid/core/datastore/UserPreferencesSerializerTest.kt
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diff --git a/core/designsystem/src/androidTest/java/com/google/samples/apps/nowinandroid/core/designsystem/ThemeTest.kt b/core/designsystem/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/ThemeTest.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Background.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Background.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Button.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Button.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Chip.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Chip.kt
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rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Chip.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/DynamicAsyncImage.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/DynamicAsyncImage.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/IconButton.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/IconButton.kt
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rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/IconButton.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/LoadingWheel.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/LoadingWheel.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Navigation.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Navigation.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Navigation.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Navigation.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Tabs.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Tabs.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Tabs.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Tabs.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Tag.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Tag.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/Tag.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/Tag.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/TopAppBar.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/TopAppBar.kt
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rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/TopAppBar.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/ViewToggle.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/ViewToggle.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/AppScrollbars.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/AppScrollbars.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/LazyScrollbarUtilities.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/LazyScrollbarUtilities.kt
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rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/LazyScrollbarUtilities.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/Scrollbar.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/Scrollbar.kt
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rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/Scrollbar.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/ScrollbarExt.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/ScrollbarExt.kt
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rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/ScrollbarExt.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/ThumbExt.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/ThumbExt.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/ThumbExt.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/component/scrollbar/ThumbExt.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/icon/NiaIcons.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/icon/NiaIcons.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/icon/NiaIcons.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/icon/NiaIcons.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Background.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Background.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Background.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Background.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Color.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Color.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Color.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Color.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Gradient.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Gradient.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Theme.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Theme.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Theme.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Theme.kt
diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Tint.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Tint.kt
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diff --git a/core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Type.kt b/core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Type.kt
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rename from core/designsystem/src/main/java/com/google/samples/apps/nowinandroid/core/designsystem/theme/Type.kt
rename to core/designsystem/src/main/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/theme/Type.kt
diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/BackgroundScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/BackgroundScreenshotTests.kt
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rename from core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/BackgroundScreenshotTests.kt
rename to core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/BackgroundScreenshotTests.kt
diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/ButtonScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/ButtonScreenshotTests.kt
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rename to core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/ButtonScreenshotTests.kt
diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/FilterChipScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/FilterChipScreenshotTests.kt
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rename from core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/FilterChipScreenshotTests.kt
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diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/IconButtonScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/IconButtonScreenshotTests.kt
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rename to core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/IconButtonScreenshotTests.kt
diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/LoadingWheelScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/LoadingWheelScreenshotTests.kt
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rename from core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/LoadingWheelScreenshotTests.kt
rename to core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/LoadingWheelScreenshotTests.kt
diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/NavigationScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/NavigationScreenshotTests.kt
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rename from core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/NavigationScreenshotTests.kt
rename to core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/NavigationScreenshotTests.kt
diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/TabsScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TabsScreenshotTests.kt
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rename from core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/TabsScreenshotTests.kt
rename to core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TabsScreenshotTests.kt
diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/TagScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TagScreenshotTests.kt
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rename from core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/TagScreenshotTests.kt
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diff --git a/core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/TopAppBarScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TopAppBarScreenshotTests.kt
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rename from core/designsystem/src/test/java/com/google/samples/apps/nowinandroid/core/designsystem/TopAppBarScreenshotTests.kt
rename to core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TopAppBarScreenshotTests.kt
diff --git a/core/domain/src/main/java/com/google/samples/apps/nowinandroid/core/domain/GetFollowableTopicsUseCase.kt b/core/domain/src/main/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetFollowableTopicsUseCase.kt
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rename from core/domain/src/main/java/com/google/samples/apps/nowinandroid/core/domain/GetFollowableTopicsUseCase.kt
rename to core/domain/src/main/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetFollowableTopicsUseCase.kt
diff --git a/core/domain/src/main/java/com/google/samples/apps/nowinandroid/core/domain/GetRecentSearchQueriesUseCase.kt b/core/domain/src/main/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetRecentSearchQueriesUseCase.kt
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rename from core/domain/src/main/java/com/google/samples/apps/nowinandroid/core/domain/GetRecentSearchQueriesUseCase.kt
rename to core/domain/src/main/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetRecentSearchQueriesUseCase.kt
diff --git a/core/domain/src/main/java/com/google/samples/apps/nowinandroid/core/domain/GetSearchContentsCountUseCase.kt b/core/domain/src/main/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetSearchContentsCountUseCase.kt
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rename from core/domain/src/main/java/com/google/samples/apps/nowinandroid/core/domain/GetSearchContentsCountUseCase.kt
rename to core/domain/src/main/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetSearchContentsCountUseCase.kt
diff --git a/core/domain/src/main/java/com/google/samples/apps/nowinandroid/core/domain/GetSearchContentsUseCase.kt b/core/domain/src/main/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetSearchContentsUseCase.kt
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rename from core/domain/src/main/java/com/google/samples/apps/nowinandroid/core/domain/GetSearchContentsUseCase.kt
rename to core/domain/src/main/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetSearchContentsUseCase.kt
diff --git a/core/domain/src/test/java/com/google/samples/apps/nowinandroid/core/domain/GetFollowableTopicsUseCaseTest.kt b/core/domain/src/test/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetFollowableTopicsUseCaseTest.kt
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rename from core/domain/src/test/java/com/google/samples/apps/nowinandroid/core/domain/GetFollowableTopicsUseCaseTest.kt
rename to core/domain/src/test/kotlin/com/google/samples/apps/nowinandroid/core/domain/GetFollowableTopicsUseCaseTest.kt
diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/DarkThemeConfig.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/DarkThemeConfig.kt
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rename from core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/DarkThemeConfig.kt
rename to core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/DarkThemeConfig.kt
diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/FollowableTopic.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/FollowableTopic.kt
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rename from core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/FollowableTopic.kt
rename to core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/FollowableTopic.kt
diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/NewsResource.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/NewsResource.kt
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rename from core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/NewsResource.kt
rename to core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/NewsResource.kt
diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/SearchResult.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/SearchResult.kt
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rename from core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/SearchResult.kt
rename to core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/SearchResult.kt
diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/ThemeBrand.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/ThemeBrand.kt
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diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/Topic.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/Topic.kt
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diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/UserData.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/UserData.kt
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diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/UserNewsResource.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/UserNewsResource.kt
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diff --git a/core/model/src/main/java/com/google/samples/apps/nowinandroid/core/model/data/UserSearchResult.kt b/core/model/src/main/kotlin/com/google/samples/apps/nowinandroid/core/model/data/UserSearchResult.kt
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diff --git a/core/network/src/demo/java/com/google/samples/apps/nowinandroid/core/network/di/FlavoredNetworkModule.kt b/core/network/src/demo/kotlin/com/google/samples/apps/nowinandroid/core/network/di/FlavoredNetworkModule.kt
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diff --git a/core/network/src/main/java/JvmUnitTestFakeAssetManager.kt b/core/network/src/main/kotlin/JvmUnitTestFakeAssetManager.kt
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diff --git a/core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/NiaNetworkDataSource.kt b/core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/NiaNetworkDataSource.kt
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diff --git a/core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/di/NetworkModule.kt b/core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/di/NetworkModule.kt
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diff --git a/core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/fake/FakeAssetManager.kt b/core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/fake/FakeAssetManager.kt
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diff --git a/core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/fake/FakeNiaNetworkDataSource.kt b/core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/fake/FakeNiaNetworkDataSource.kt
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diff --git a/core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/model/NetworkChangeList.kt b/core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/model/NetworkChangeList.kt
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diff --git a/core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/model/NetworkNewsResource.kt b/core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/model/NetworkNewsResource.kt
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rename from core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/model/NetworkNewsResource.kt
rename to core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/model/NetworkNewsResource.kt
diff --git a/core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/model/NetworkTopic.kt b/core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/model/NetworkTopic.kt
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rename from core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/model/NetworkTopic.kt
rename to core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/model/NetworkTopic.kt
diff --git a/core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/retrofit/RetrofitNiaNetwork.kt b/core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/retrofit/RetrofitNiaNetwork.kt
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rename from core/network/src/main/java/com/google/samples/apps/nowinandroid/core/network/retrofit/RetrofitNiaNetwork.kt
rename to core/network/src/main/kotlin/com/google/samples/apps/nowinandroid/core/network/retrofit/RetrofitNiaNetwork.kt
diff --git a/core/network/src/prod/java/com/google/samples/apps/nowinandroid/core/network/di/FlavoredNetworkModule.kt b/core/network/src/prod/kotlin/com/google/samples/apps/nowinandroid/core/network/di/FlavoredNetworkModule.kt
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rename from core/network/src/prod/java/com/google/samples/apps/nowinandroid/core/network/di/FlavoredNetworkModule.kt
rename to core/network/src/prod/kotlin/com/google/samples/apps/nowinandroid/core/network/di/FlavoredNetworkModule.kt
diff --git a/core/network/src/test/java/com/google/samples/apps/nowinandroid/core/network/fake/FakeNiaNetworkDataSourceTest.kt b/core/network/src/test/kotlin/com/google/samples/apps/nowinandroid/core/network/fake/FakeNiaNetworkDataSourceTest.kt
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rename from core/network/src/test/java/com/google/samples/apps/nowinandroid/core/network/fake/FakeNiaNetworkDataSourceTest.kt
rename to core/network/src/test/kotlin/com/google/samples/apps/nowinandroid/core/network/fake/FakeNiaNetworkDataSourceTest.kt
diff --git a/core/notifications/src/demo/java/com/google/samples/apps/nowinandroid/core/notifications/NotificationsModule.kt b/core/notifications/src/demo/kotlin/com/google/samples/apps/nowinandroid/core/notifications/NotificationsModule.kt
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rename from core/notifications/src/demo/java/com/google/samples/apps/nowinandroid/core/notifications/NotificationsModule.kt
rename to core/notifications/src/demo/kotlin/com/google/samples/apps/nowinandroid/core/notifications/NotificationsModule.kt
diff --git a/core/notifications/src/main/java/com/google/samples/apps/nowinandroid/core/notifications/NoOpNotifier.kt b/core/notifications/src/main/kotlin/com/google/samples/apps/nowinandroid/core/notifications/NoOpNotifier.kt
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diff --git a/core/notifications/src/main/java/com/google/samples/apps/nowinandroid/core/notifications/Notifier.kt b/core/notifications/src/main/kotlin/com/google/samples/apps/nowinandroid/core/notifications/Notifier.kt
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diff --git a/core/notifications/src/main/java/com/google/samples/apps/nowinandroid/core/notifications/SystemTrayNotifier.kt b/core/notifications/src/main/kotlin/com/google/samples/apps/nowinandroid/core/notifications/SystemTrayNotifier.kt
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rename to core/notifications/src/main/kotlin/com/google/samples/apps/nowinandroid/core/notifications/SystemTrayNotifier.kt
diff --git a/core/notifications/src/prod/java/com/google/samples/apps/nowinandroid/core/notifications/NotificationsModule.kt b/core/notifications/src/prod/kotlin/com/google/samples/apps/nowinandroid/core/notifications/NotificationsModule.kt
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rename from core/notifications/src/prod/java/com/google/samples/apps/nowinandroid/core/notifications/NotificationsModule.kt
rename to core/notifications/src/prod/kotlin/com/google/samples/apps/nowinandroid/core/notifications/NotificationsModule.kt
diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/rules/GrantPostNotificationsPermissionRule.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/rules/GrantPostNotificationsPermissionRule.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/rules/GrantPostNotificationsPermissionRule.kt
rename to core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/rules/GrantPostNotificationsPermissionRule.kt
diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/NiaTestRunner.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/NiaTestRunner.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/NiaTestRunner.kt
rename to core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/NiaTestRunner.kt
diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/FollowableTopicTestData.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/data/FollowableTopicTestData.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/FollowableTopicTestData.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/NewsResourcesTestData.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/data/NewsResourcesTestData.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/NewsResourcesTestData.kt
rename to core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/data/NewsResourcesTestData.kt
diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/TopicsTestData.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/data/TopicsTestData.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/TopicsTestData.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/UserNewsResourcesTestData.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/data/UserNewsResourcesTestData.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/UserNewsResourcesTestData.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/di/TestDispatcherModule.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/di/TestDispatcherModule.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/di/TestDispatcherModule.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/di/TestDispatchersModule.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/di/TestDispatchersModule.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/di/TestDispatchersModule.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/notifications/TestNotifier.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/notifications/TestNotifier.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/notifications/TestNotifier.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestNewsRepository.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestNewsRepository.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestNewsRepository.kt
rename to core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestNewsRepository.kt
diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestRecentSearchRepository.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestRecentSearchRepository.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestRecentSearchRepository.kt
rename to core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestRecentSearchRepository.kt
diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestSearchContentsRepository.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestSearchContentsRepository.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestSearchContentsRepository.kt
rename to core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestSearchContentsRepository.kt
diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestTopicsRepository.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestTopicsRepository.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestTopicsRepository.kt
rename to core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestTopicsRepository.kt
diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestUserDataRepository.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/repository/TestUserDataRepository.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/repository/TestUserDataRepository.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/MainDispatcherRule.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/MainDispatcherRule.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/MainDispatcherRule.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/ScreenshotHelper.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/ScreenshotHelper.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/ScreenshotHelper.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/TestAnalyticsHelper.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/TestAnalyticsHelper.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/TestAnalyticsHelper.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/TestNetworkMonitor.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/TestNetworkMonitor.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/TestNetworkMonitor.kt
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diff --git a/core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/TestSyncManager.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/TestSyncManager.kt
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rename from core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/util/TestSyncManager.kt
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diff --git a/core/ui/src/androidTest/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCardTest.kt b/core/ui/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCardTest.kt
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rename from core/ui/src/androidTest/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCardTest.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/AnalyticsExtensions.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/AnalyticsExtensions.kt
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rename from core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/AnalyticsExtensions.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/DevicePreviews.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/DevicePreviews.kt
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rename from core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/DevicePreviews.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/FollowableTopicPreviewParameterProvider.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/FollowableTopicPreviewParameterProvider.kt
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rename from core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/FollowableTopicPreviewParameterProvider.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/JankStatsExtensions.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/JankStatsExtensions.kt
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rename from core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/JankStatsExtensions.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/NewsFeed.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/NewsFeed.kt
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rename from core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/NewsFeed.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCard.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCard.kt
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rename from core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCard.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCardList.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCardList.kt
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rename from core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCardList.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/TimeZoneBroadcastReceiver.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/TimeZoneBroadcastReceiver.kt
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rename from core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/TimeZoneBroadcastReceiver.kt
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diff --git a/core/ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/UserNewsResourcePreviewParameterProvider.kt b/core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/UserNewsResourcePreviewParameterProvider.kt
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diff --git a/feature/bookmarks/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksScreenTest.kt b/feature/bookmarks/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksScreenTest.kt
similarity index 100%
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diff --git a/feature/bookmarks/src/main/java/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksScreen.kt b/feature/bookmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksScreen.kt
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diff --git a/feature/bookmarks/src/main/java/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksViewModel.kt b/feature/bookmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksViewModel.kt
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diff --git a/feature/bookmarks/src/main/java/com/google/samples/apps/nowinandroid/feature/bookmarks/navigation/BookmarksNavigation.kt b/feature/bookmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/bookmarks/navigation/BookmarksNavigation.kt
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rename from feature/bookmarks/src/main/java/com/google/samples/apps/nowinandroid/feature/bookmarks/navigation/BookmarksNavigation.kt
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diff --git a/feature/bookmarks/src/test/java/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksViewModelTest.kt b/feature/bookmarks/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksViewModelTest.kt
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rename from feature/bookmarks/src/test/java/com/google/samples/apps/nowinandroid/feature/bookmarks/BookmarksViewModelTest.kt
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diff --git a/feature/foryou/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreenTest.kt b/feature/foryou/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreenTest.kt
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rename from feature/foryou/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreenTest.kt
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diff --git a/feature/foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreen.kt b/feature/foryou/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreen.kt
similarity index 100%
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diff --git a/feature/foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouViewModel.kt b/feature/foryou/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/ForYouViewModel.kt
similarity index 100%
rename from feature/foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouViewModel.kt
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diff --git a/feature/foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/OnboardingUiState.kt b/feature/foryou/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/OnboardingUiState.kt
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diff --git a/feature/foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/navigation/ForYouNavigation.kt b/feature/foryou/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/navigation/ForYouNavigation.kt
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rename from feature/foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/navigation/ForYouNavigation.kt
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diff --git a/feature/foryou/src/test/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreenScreenshotTests.kt b/feature/foryou/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreenScreenshotTests.kt
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rename from feature/foryou/src/test/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreenScreenshotTests.kt
rename to feature/foryou/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreenScreenshotTests.kt
diff --git a/feature/foryou/src/test/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouViewModelTest.kt b/feature/foryou/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/ForYouViewModelTest.kt
similarity index 100%
rename from feature/foryou/src/test/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouViewModelTest.kt
rename to feature/foryou/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/ForYouViewModelTest.kt
diff --git a/feature/interests/src/androidTest/java/com/google/samples/apps/nowinandroid/interests/InterestsScreenTest.kt b/feature/interests/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/interests/InterestsScreenTest.kt
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rename from feature/interests/src/androidTest/java/com/google/samples/apps/nowinandroid/interests/InterestsScreenTest.kt
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diff --git a/feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/InterestsItem.kt b/feature/interests/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/InterestsItem.kt
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rename from feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/InterestsItem.kt
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diff --git a/feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/InterestsScreen.kt b/feature/interests/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/InterestsScreen.kt
similarity index 100%
rename from feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/InterestsScreen.kt
rename to feature/interests/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/InterestsScreen.kt
diff --git a/feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/InterestsViewModel.kt b/feature/interests/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/InterestsViewModel.kt
similarity index 100%
rename from feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/InterestsViewModel.kt
rename to feature/interests/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/InterestsViewModel.kt
diff --git a/feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/TabContent.kt b/feature/interests/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/TabContent.kt
similarity index 100%
rename from feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/TabContent.kt
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diff --git a/feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/navigation/InterestsNavigation.kt b/feature/interests/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/navigation/InterestsNavigation.kt
similarity index 100%
rename from feature/interests/src/main/java/com/google/samples/apps/nowinandroid/feature/interests/navigation/InterestsNavigation.kt
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diff --git a/feature/interests/src/test/java/com/google/samples/apps/nowinandroid/interests/InterestsViewModelTest.kt b/feature/interests/src/test/kotlin/com/google/samples/apps/nowinandroid/interests/InterestsViewModelTest.kt
similarity index 100%
rename from feature/interests/src/test/java/com/google/samples/apps/nowinandroid/interests/InterestsViewModelTest.kt
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diff --git a/feature/search/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/search/SearchScreenTest.kt b/feature/search/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchScreenTest.kt
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rename from feature/search/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/search/SearchScreenTest.kt
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diff --git a/feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/RecentSearchQueriesUiState.kt b/feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/RecentSearchQueriesUiState.kt
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rename from feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/RecentSearchQueriesUiState.kt
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diff --git a/feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/SearchResultUiState.kt b/feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchResultUiState.kt
similarity index 100%
rename from feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/SearchResultUiState.kt
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diff --git a/feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/SearchScreen.kt b/feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchScreen.kt
similarity index 100%
rename from feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/SearchScreen.kt
rename to feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchScreen.kt
diff --git a/feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/SearchUiStatePreviewParameterProvider.kt b/feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchUiStatePreviewParameterProvider.kt
similarity index 100%
rename from feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/SearchUiStatePreviewParameterProvider.kt
rename to feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchUiStatePreviewParameterProvider.kt
diff --git a/feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/SearchViewModel.kt b/feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchViewModel.kt
similarity index 100%
rename from feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/SearchViewModel.kt
rename to feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchViewModel.kt
diff --git a/feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/navigation/SearchNavigation.kt b/feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/navigation/SearchNavigation.kt
similarity index 100%
rename from feature/search/src/main/java/com/google/samples/apps/nowinandroid/feature/search/navigation/SearchNavigation.kt
rename to feature/search/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/search/navigation/SearchNavigation.kt
diff --git a/feature/search/src/test/java/com/google/samples/apps/nowinandroid/feature/search/SearchViewModelTest.kt b/feature/search/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchViewModelTest.kt
similarity index 100%
rename from feature/search/src/test/java/com/google/samples/apps/nowinandroid/feature/search/SearchViewModelTest.kt
rename to feature/search/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/search/SearchViewModelTest.kt
diff --git a/feature/settings/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialogTest.kt b/feature/settings/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialogTest.kt
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rename from feature/settings/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialogTest.kt
rename to feature/settings/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialogTest.kt
diff --git a/feature/settings/src/main/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialog.kt b/feature/settings/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialog.kt
similarity index 100%
rename from feature/settings/src/main/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsDialog.kt
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diff --git a/feature/settings/src/main/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsViewModel.kt b/feature/settings/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/settings/SettingsViewModel.kt
similarity index 100%
rename from feature/settings/src/main/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsViewModel.kt
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diff --git a/feature/settings/src/test/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsViewModelTest.kt b/feature/settings/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/settings/SettingsViewModelTest.kt
similarity index 100%
rename from feature/settings/src/test/java/com/google/samples/apps/nowinandroid/feature/settings/SettingsViewModelTest.kt
rename to feature/settings/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/settings/SettingsViewModelTest.kt
diff --git a/feature/topic/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/topic/TopicScreenTest.kt b/feature/topic/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/feature/topic/TopicScreenTest.kt
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rename from feature/topic/src/androidTest/java/com/google/samples/apps/nowinandroid/feature/topic/TopicScreenTest.kt
rename to feature/topic/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/feature/topic/TopicScreenTest.kt
diff --git a/feature/topic/src/main/java/com/google/samples/apps/nowinandroid/feature/topic/TopicScreen.kt b/feature/topic/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/topic/TopicScreen.kt
similarity index 100%
rename from feature/topic/src/main/java/com/google/samples/apps/nowinandroid/feature/topic/TopicScreen.kt
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diff --git a/feature/topic/src/main/java/com/google/samples/apps/nowinandroid/feature/topic/TopicViewModel.kt b/feature/topic/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/topic/TopicViewModel.kt
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rename from feature/topic/src/main/java/com/google/samples/apps/nowinandroid/feature/topic/TopicViewModel.kt
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diff --git a/feature/topic/src/main/java/com/google/samples/apps/nowinandroid/feature/topic/navigation/TopicNavigation.kt b/feature/topic/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/topic/navigation/TopicNavigation.kt
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rename from feature/topic/src/main/java/com/google/samples/apps/nowinandroid/feature/topic/navigation/TopicNavigation.kt
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diff --git a/feature/topic/src/test/java/com/google/samples/apps/nowinandroid/feature/topic/TopicViewModelTest.kt b/feature/topic/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/topic/TopicViewModelTest.kt
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rename from feature/topic/src/test/java/com/google/samples/apps/nowinandroid/feature/topic/TopicViewModelTest.kt
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diff --git a/lint/src/main/java/com/google/samples/apps/nowinandroid/lint/designsystem/DesignSystemDetector.kt b/lint/src/main/kotlin/com/google/samples/apps/nowinandroid/lint/designsystem/DesignSystemDetector.kt
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rename from lint/src/main/java/com/google/samples/apps/nowinandroid/lint/designsystem/DesignSystemDetector.kt
rename to lint/src/main/kotlin/com/google/samples/apps/nowinandroid/lint/designsystem/DesignSystemDetector.kt
diff --git a/lint/src/main/java/com/google/samples/apps/nowinandroid/lint/designsystem/DesignSystemIssueRegistry.kt b/lint/src/main/kotlin/com/google/samples/apps/nowinandroid/lint/designsystem/DesignSystemIssueRegistry.kt
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rename from lint/src/main/java/com/google/samples/apps/nowinandroid/lint/designsystem/DesignSystemIssueRegistry.kt
rename to lint/src/main/kotlin/com/google/samples/apps/nowinandroid/lint/designsystem/DesignSystemIssueRegistry.kt
diff --git a/sync/sync-test/src/main/java/com/google/samples/apps/nowinandroid/core/sync/test/NeverSyncingSyncManager.kt b/sync/sync-test/src/main/kotlin/com/google/samples/apps/nowinandroid/core/sync/test/NeverSyncingSyncManager.kt
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rename from sync/sync-test/src/main/java/com/google/samples/apps/nowinandroid/core/sync/test/NeverSyncingSyncManager.kt
rename to sync/sync-test/src/main/kotlin/com/google/samples/apps/nowinandroid/core/sync/test/NeverSyncingSyncManager.kt
diff --git a/sync/sync-test/src/main/java/com/google/samples/apps/nowinandroid/core/sync/test/TestSyncModule.kt b/sync/sync-test/src/main/kotlin/com/google/samples/apps/nowinandroid/core/sync/test/TestSyncModule.kt
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rename from sync/sync-test/src/main/java/com/google/samples/apps/nowinandroid/core/sync/test/TestSyncModule.kt
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diff --git a/sync/work/src/androidTest/java/com/google/samples/apps/nowinandroid/sync/workers/SyncWorkerTest.kt b/sync/work/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/sync/workers/SyncWorkerTest.kt
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rename from sync/work/src/androidTest/java/com/google/samples/apps/nowinandroid/sync/workers/SyncWorkerTest.kt
rename to sync/work/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/sync/workers/SyncWorkerTest.kt
diff --git a/sync/work/src/demo/java/com/google/samples/apps/nowinandroid/sync/di/SyncModule.kt b/sync/work/src/demo/kotlin/com/google/samples/apps/nowinandroid/sync/di/SyncModule.kt
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rename from sync/work/src/demo/java/com/google/samples/apps/nowinandroid/sync/di/SyncModule.kt
rename to sync/work/src/demo/kotlin/com/google/samples/apps/nowinandroid/sync/di/SyncModule.kt
diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/initializers/SyncInitializer.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/initializers/SyncInitializer.kt
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rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/initializers/SyncInitializer.kt
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diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/initializers/SyncWorkHelpers.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/initializers/SyncWorkHelpers.kt
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rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/initializers/SyncWorkHelpers.kt
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diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/services/SyncNotificationsService.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/services/SyncNotificationsService.kt
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rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/services/SyncNotificationsService.kt
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diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/status/StubSyncSubscriber.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/status/StubSyncSubscriber.kt
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rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/status/StubSyncSubscriber.kt
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diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/status/SyncSubscriber.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/status/SyncSubscriber.kt
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rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/status/SyncSubscriber.kt
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diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/status/WorkManagerSyncManager.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/status/WorkManagerSyncManager.kt
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rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/status/WorkManagerSyncManager.kt
rename to sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/status/WorkManagerSyncManager.kt
diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/workers/AnalyticsExtensions.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/workers/AnalyticsExtensions.kt
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rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/workers/AnalyticsExtensions.kt
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diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/workers/DelegatingWorker.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/workers/DelegatingWorker.kt
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rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/workers/DelegatingWorker.kt
rename to sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/workers/DelegatingWorker.kt
diff --git a/sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/workers/SyncWorker.kt b/sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/workers/SyncWorker.kt
similarity index 100%
rename from sync/work/src/main/java/com/google/samples/apps/nowinandroid/sync/workers/SyncWorker.kt
rename to sync/work/src/main/kotlin/com/google/samples/apps/nowinandroid/sync/workers/SyncWorker.kt
diff --git a/sync/work/src/prod/java/com/google/samples/apps/nowinandroid/sync/di/SyncModule.kt b/sync/work/src/prod/kotlin/com/google/samples/apps/nowinandroid/sync/di/SyncModule.kt
similarity index 100%
rename from sync/work/src/prod/java/com/google/samples/apps/nowinandroid/sync/di/SyncModule.kt
rename to sync/work/src/prod/kotlin/com/google/samples/apps/nowinandroid/sync/di/SyncModule.kt
diff --git a/sync/work/src/prod/java/com/google/samples/apps/nowinandroid/sync/status/FirebaseSyncSubscriber.kt b/sync/work/src/prod/kotlin/com/google/samples/apps/nowinandroid/sync/status/FirebaseSyncSubscriber.kt
similarity index 100%
rename from sync/work/src/prod/java/com/google/samples/apps/nowinandroid/sync/status/FirebaseSyncSubscriber.kt
rename to sync/work/src/prod/kotlin/com/google/samples/apps/nowinandroid/sync/status/FirebaseSyncSubscriber.kt
diff --git a/ui-test-hilt-manifest/src/main/java/com/google/samples/apps/nowinandroid/uitesthiltmanifest/HiltComponentActivity.kt b/ui-test-hilt-manifest/src/main/kotlin/com/google/samples/apps/nowinandroid/uitesthiltmanifest/HiltComponentActivity.kt
similarity index 100%
rename from ui-test-hilt-manifest/src/main/java/com/google/samples/apps/nowinandroid/uitesthiltmanifest/HiltComponentActivity.kt
rename to ui-test-hilt-manifest/src/main/kotlin/com/google/samples/apps/nowinandroid/uitesthiltmanifest/HiltComponentActivity.kt