Keep one blank line after class definition

dev-support/hippo4j_eclipse_formatter.xml

@@ -45,6 +45,7 @@
         <setting id="org.eclipse.jdt.core.formatter.alignment_for_parameters_in_method_declaration" value="106"/>
         <setting id="org.eclipse.jdt.core.formatter.alignment_for_parameters_in_constructor_declaration" value="106"/>
         <setting id="org.eclipse.jdt.core.formatter.alignment_for_throws_clause_in_constructor_declaration" value="106"/>
+        <setting id="org.eclipse.jdt.core.formatter.blank_lines_before_first_class_body_declaration" value="1"/>
         <setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_explicit_constructor_call.count_dependent" value="16|5|80"/>
     </profile>
 </profiles>

hippo4j-common/src/main/java/cn/hippo4j/common/web/exception/ErrorCodeEnum.java

@@ -29,6 +29,7 @@ public enum ErrorCodeEnum implements ErrorCode {
      * UNKNOWN_ERROR
      */
     UNKNOWN_ERROR {
+
         @Override
         public String getCode() {
             return "1";
@@ -44,6 +45,7 @@ public enum ErrorCodeEnum implements ErrorCode {
      * VALIDATION_ERROR
      */
     VALIDATION_ERROR {
+
         @Override
         public String getCode() {
             return "2";
@@ -59,6 +61,7 @@ public enum ErrorCodeEnum implements ErrorCode {
      * SERVICE_ERROR
      */
     SERVICE_ERROR {
+
         @Override
         public String getCode() {
             return "3";
@@ -74,6 +77,7 @@ public enum ErrorCodeEnum implements ErrorCode {
      * NOT_FOUND
      */
     NOT_FOUND {
+
         @Override
         public String getCode() {
             return "404";
@@ -89,6 +93,7 @@ public enum ErrorCodeEnum implements ErrorCode {
      * LOGIN_TIMEOUT
      */
     LOGIN_TIMEOUT {
+
         @Override
         public String getCode() {
             return "A000004";

hippo4j-core/src/main/java/cn/hippo4j/core/toolkit/SystemClock.java

@@ -35,6 +35,7 @@ public class SystemClock {
     private static final String THREAD_NAME = "system.clock";
 
     private static class InstanceHolder {
+
         private static final SystemClock INSTANCE = new SystemClock(1);
     }
 

hippo4j-spring-boot/hippo4j-core-spring-boot-starter/src/main/java/cn/hippo4j/core/starter/common/ConfigFileTypeEnum.java

@@ -29,6 +29,7 @@ public enum ConfigFileTypeEnum {
      * PROPERTIES
      */
     PROPERTIES {
+
         @Override
         public String type() {
             return "properties";
@@ -39,6 +40,7 @@ public enum ConfigFileTypeEnum {
      * YML
      */
     YML {
+
         @Override
         public String type() {
             return "yml";
@@ -49,6 +51,7 @@ public enum ConfigFileTypeEnum {
      * YAML
      */
     YAML {
+
         @Override
         public String type() {
             return "yaml";

hippo4j-spring-boot/hippo4j-core-spring-boot-starter/src/main/java/cn/hippo4j/core/starter/parser/ConfigParserHandler.java

@@ -59,6 +59,7 @@ public class ConfigParserHandler {
     }
 
     private static class ConfigParserHandlerHolder {
+
         private static final ConfigParserHandler INSTANCE = new ConfigParserHandler();
     }
 }

hippo4j-spring-boot/hippo4j-core-spring-boot-starter/src/main/java/cn/hippo4j/core/starter/refresher/NacosCloudRefresherHandler.java

@@ -50,6 +50,7 @@ public class NacosCloudRefresherHandler extends AbstractCoreThreadPoolDynamicRef
 
         nacosConfigManager.getConfigService().addListener(nacosConfig.get("data-id"),
                 nacosConfig.get("group"), new Listener() {
+
                     @Override
                     public Executor getExecutor() {
                         return dynamicRefreshExecutorService;

hippo4j-spring-boot/hippo4j-core-spring-boot-starter/src/main/java/cn/hippo4j/core/starter/refresher/NacosRefresherHandler.java

@@ -50,6 +50,7 @@ public class NacosRefresherHandler extends AbstractCoreThreadPoolDynamicRefresh
 
         configService.addListener(nacosConfig.get("data-id"), nacosConfig.get("group"),
                 new Listener() {
+
                     @Override
                     public Executor getExecutor() {
                         return dynamicRefreshExecutorService;

hippo4j-spring-boot/hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/starter/config/HttpClientConfiguration.java

@@ -62,6 +62,7 @@ public class HttpClientConfiguration {
     @SneakyThrows
     private void supportHttps(OkHttpClient.Builder builder) {
         final TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
+
             @Override
             public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) {
             }

hippo4j-spring-boot/hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/starter/core/ThreadPoolOperation.java

@@ -40,6 +40,7 @@ public class ThreadPoolOperation {
 
     public Listener subscribeConfig(String tpId, Executor executor, ThreadPoolSubscribeCallback threadPoolSubscribeCallback) {
         Listener configListener = new Listener() {
+
             @Override
             public void receiveConfigInfo(String config) {
                 threadPoolSubscribeCallback.callback(config);