Program to demonstrate how to Clone an Object in Java

Program to demonstrate how to Clone an Object in Java

package com.hubberspot.example;

//1. class should implement Cloneable interface
public class Customer implements Cloneable {

   private int id;
   private String name;

   public String toString() {
 return "(id = " + id + ", name = " + name + ")";
   }
 
//2. class should override clone() method
//3. will throw CloneNotSupportedException exception if
// interface not implemented ... 
   @Override    
   protected Object clone() throws CloneNotSupportedException {
 return super.clone();
   }

   public static void main(String[] args) {
 Customer customer = new Customer();
 customer.id = 5;
 customer.name = "magicman";

 try {
       //4. calling clone() method to clone Customer
     Customer customerClone = (Customer) customer.clone();
     System.out.println("Cloned Customer before changes = " 
                           + customerClone);
   
     customerClone.id = 10;
     customerClone.name = "jonty";

     System.out.println("Cloned Customer after changes = " 
                           + customerClone);
     
            System.out.println("Original Customer = " + customer);
 } 
 catch (CloneNotSupportedException e) {
     e.printStackTrace();
 }
   } 
}

Output of the program :