package com.hashcode;

import java.util.HashMap;
import java.util.Map;

public class HashCodeDemo {

	public static void main(String[] args) {

		Map<Person,Integer> personMap = new HashMap<>();
		Person p1 = new Person(10001, "John", 28);
		Person p2 = p1;
		Person p3 = new Person(10001, "John", 28);
		personMap.put(p1,p1.getUserId());

		Integer userId1 = personMap.get(p1);
		Integer userId2 = personMap.get(p2);
		Integer userId3 = personMap.get(p3);

		System.out.println("userId1 = "+userId1);
		System.out.println("userId2 = "+userId2);
		System.out.println("userId3 = "+userId3);
	}
}