clone

public class User extends Object implements Cloneable{

 private String name;

 public String getName() {
  return name;
 }
 public User(String name){
  this.name=name;
 }
 public Object clone(){
  return new User(name);
 }
 
 public static void main(String args[]){
  User user=new User("aaa");
  User u2=(User)user.clone();
  System.out.println(user+"-------"+u2+"-----name:"+u2.getName());
  
 }
}