java-basics/core-java/methods/DeepCopy.java at master · CodeForHunger/java-basics · GitHub

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package methods;

/**

* In the deep copy, we create a clone which is independent of original object and making changes in the cloned object should not affect original object.

* So for deep copy we need to ensure all the member class also implement the Cloneable interface and override the clone() method of the object class.

import java.util.ArrayList;

class DeepCopy1 {

int x, y;

}

class DeepCopy2 implements Cloneable {

int a, b;

DeepCopy1 c = new DeepCopy1();

public Object clone() throws CloneNotSupportedException {

DeepCopy2 t = (DeepCopy2)super.clone();

t.c = new DeepCopy1();

return t;

}

public class DeepCopy {

public static void main(String[] args) throws CloneNotSupportedException {

DeepCopy2 t1 = new DeepCopy2();

t1.a = 10;

t1.b = 20;

t1.c.x = 30;

t1.c.y = 40;

DeepCopy2 t3 = (DeepCopy2)t1.clone();

t3.a = 100;

t3.c.x = 300;

System.out.println(t1.a + " " + t1.b + " " + t1.c.x + " " +t1.c.y);

System.out.println(t3.a + " " + t3.b + " " + t3.c.x + " " + t3.c.y);

}

java-basics/core-java/methods/DeepCopy.java at master · CodeForHunger/java-basics · GitHub

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