Program: How to create multiple copies of a given object?

Collections.nCopies() method returns an immutable list consisting of n copies of the specified object. The newly allocated data object is tiny (it contains a single reference to the data object). This method is useful in combination with the List.addAll method to grow lists. The returned list is serializable. Below example shows how to create multiple copies of a user defined object.

package com.java2novice.collections;

import java.util.Collections;
import java.util.List;

public class MyObjectNCopies {

	public static void main(String a[]){
		
		String temp = "JAVA2NOVICE";
		List<String> tempCopies = Collections.nCopies(5, temp);
		System.out.println(tempCopies);
		Empy emp = new Empy(10, "Raghu", 25000);
		List<Empy> empCopies = Collections.nCopies(5, emp);
		for(Empy e:empCopies){
			System.out.println(e);
		}
	}
}

class Empy{
	
	private int id;
	private String name;
	private Integer salary;
	
	public Empy(int id, String name, Integer sal){
		this.id = id;
		this.name = name;
		this.salary = sal;
	}
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Integer getSalary() {
		return salary;
	}
	public void setSalary(Integer salary) {
		this.salary = salary;
	}
	public String toString(){
		return id+"  "+name+"   "+salary;
	}
}

[JAVA2NOVICE, JAVA2NOVICE, JAVA2NOVICE, JAVA2NOVICE, JAVA2NOVICE]
10  Raghu   25000
10  Raghu   25000
10  Raghu   25000
10  Raghu   25000
10  Raghu   25000