Shallow and Deep Copy example

core-java-modules/core-java-lang-oop-patterns/src/main/java/com/baeldung/shallowdeepcopy/Student.java

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+package com.baeldung.shallowdeepcopy;
+
+class Student {
+	private String name;
+	private int rollno;
+
+	public Student(String name, int rollno) {
+		this.name = name;
+		this.rollno = rollno;
+	}
+
+	public String getName() {
+		return name;
+	}
+	public int getRollno() {
+		return rollno;
+	}
+
+	public void setRollno(int rollno) {
+		this.rollno = rollno;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+}
+

core-java-modules/core-java-lang-oop-patterns/src/test/java/com/baeldung/shallowdeepcopy/ShallowDeepCopyExampleTest.java

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+package com.baeldung.shallowdeepcopy;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.Test;
+
+public class ShallowDeepCopyExampleTest {
+
+	@Test
+	void testShallowCopy() {
+		Student originalStudent = new Student("John", 20);
+		Student shallowCopy = originalStudent;
+
+		shallowCopy.setName("Baeldung");
+		shallowCopy.setRollno(10);
+
+		assertEquals("Baeldung", originalStudent.getName());
+		assertEquals(10, originalStudent.getRollno());
+	}
+
+    @Test
+    void testDeepCopy() {
+        Student originalStudent = new Student("John", 20);
+        Student deepCopy = new Student(originalStudent.getName(), originalStudent.getRollno());
+
+        deepCopy.setName("Baeldung");
+        deepCopy.setRollno(10);
+
+        assertEquals("John", originalStudent.getName());
+        assertEquals(20, originalStudent.getRollno());
+
+        assertEquals("Baeldung", deepCopy.getName());
+        assertEquals(10, deepCopy.getRollno());
+    }
+}