diff --git a/java/src/main/java/io/nayuki/qrcodegen/QrSegmentTest.java b/java/src/main/java/io/nayuki/qrcodegen/QrSegmentTest.java
new file mode 100644
index 0000000..d48f7a1
--- /dev/null
+++ b/java/src/main/java/io/nayuki/qrcodegen/QrSegmentTest.java
@@ -0,0 +1,92 @@
+package io.nayuki.qrcodegen;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+
+class QrSegmentTest {
+
+	@Test
+	void testMakeBytes() {
+		byte[] data = {1, 2, 3, 4};
+		QrSegment.makeBytes(data);
+	}
+
+	@Test
+	void testMakeNumeric() {
+		QrSegment.makeNumeric("1234567890");
+	}
+	
+	@Test
+	void testMakeAlphanumeric() {
+		QrSegment.makeAlphanumeric("123ABCDEF");
+	}
+	
+	@Test
+	void testEmptyStringToMakeSegment() {
+		String text = "";
+		QrSegment.makeSegments(text);
+	}
+	
+	@Test
+	void testMakeBytesToMakeSegment() {
+		byte[] data = {1, 2, 3, 4};
+		String text = new String(data);
+		QrSegment.makeSegments(text);
+	}
+	
+	@Test
+	void testMakeNumericToMakeSegment() {
+		QrSegment.makeSegments("123457890");
+	}
+	
+	@Test
+	void testMakeAlphanumericToMakeSegment() {
+		QrSegment.makeSegments("123ABCDEF");
+	}
+	
+	@Test
+	void testMakeEciToUnderOfRange() {
+		int assignValue = -1;
+		QrSegment.makeEci(assignValue);
+	}
+	
+	@Test
+	void testMakeEciToRange1() {
+		int assignValue = 1 << 3;
+		QrSegment.makeEci(assignValue);
+	}
+	
+	@Test
+	void testMakeEciToRange2() {
+		int assignValue = 1 << 10;
+		QrSegment.makeEci(assignValue);
+	}
+	
+	@Test
+	void testMakeEciToRange3() {
+		int assignValue = 1 << 15;
+		QrSegment.makeEci(assignValue);
+	}
+	
+	@Test
+	void testMakeEciToOutOFRange() {
+		int assignValue = 1 << 22;
+		QrSegment.makeEci(assignValue);
+	}
+	
+	@Test
+	void testGetData() {
+		QrSegment qrSegment = QrSegment.makeNumeric("000");
+		qrSegment.getData();
+	}
+	
+	@Test
+	void testGetTotalBits() {
+		List<QrSegment> segments = null;
+		segments=QrSegment.makeSegments("123456");
+		QrSegment.getTotalBits(segments, 12);
+	}
+}