Program: How to get max element of a list of user defined objects using Comparator?

Collections.max() method returns the maximum element of the given collection, according to the order induced by the specified comparator. All elements in the collection must be mutually comparable by the specified comparator (that is, comp.compare(e1, e2) must not throw a ClassCastException for any elements e1 and e2 in the collection). Below example shows how to get max salary from the given list of user defined objects by using comparator object.

package com.java2novice.collections;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class MyMaxComparator {

	public static void main(String a[]){
		
		List<Empy> emps = new ArrayList<Empy>();
		emps.add(new Empy(10, "Raghu", 25000));
		emps.add(new Empy(120, "Krish", 45000));
		emps.add(new Empy(210, "John", 14000));
		emps.add(new Empy(150, "Kishore", 24000));
		Empy maxSal = Collections.max(emps, new EmpyComp());
		System.out.println("Employee with max salary: "+maxSal);
	}
}

class EmpyComp implements Comparator<Empy>{

	@Override
	public int compare(Empy e1, Empy e2) {
		return e1.getSalary().compareTo(e2.getSalary());
	}
}

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;
	}
}

Employee with max salary: 120  Krish   45000