Program: How to delete user defined objects from HashSet?

Below example shows how to delete user defined objects from HashSet. You can achieve this by implementing equals and hashcode methods at the user defined objects.

package com.java2novice.hashset;

import java.util.HashSet;

public class MylhsDeleteObject {

	public static void main(String a[]){
		
		HashSet<Price> lhs = new HashSet<Price>();
		lhs.add(new Price("Banana", 20));
		lhs.add(new Price("Apple", 40));
		lhs.add(new Price("Orange", 30));
		for(Price pr:lhs){
			System.out.println(pr);
		}
		Price key = new Price("Banana", 20);
		System.out.println("deleting key from set...");
		lhs.remove(key);
		System.out.println("Elements after delete:");
		for(Price pr:lhs){
			System.out.println(pr);
		}
	}
}

class Price{
	
	private String item;
	private int price;
	
	public Price(String itm, int pr){
		this.item = itm;
		this.price = pr;
	}
	
	public int hashCode(){
		System.out.println("In hashcode");
		int hashcode = 0;
		hashcode = price*20;
		hashcode += item.hashCode();
		return hashcode;
	}
	
	public boolean equals(Object obj){
		System.out.println("In equals");
		if (obj instanceof Price) {
			Price pp = (Price) obj;
			return (pp.item.equals(this.item) && pp.price == this.price);
		} else {
			return false;
		}
	}
	
	public String getItem() {
		return item;
	}
	public void setItem(String item) {
		this.item = item;
	}
	public int getPrice() {
		return price;
	}
	public void setPrice(int price) {
		this.price = price;
	}
	
	public String toString(){
		return "item: "+item+"  price: "+price;
	}
}

In hashcode
In hashcode
In hashcode
item: Banana  price: 20
item: Apple  price: 40
item: Orange  price: 30
deleting key from set...
In hashcode
In equals
Elements after delete:
item: Apple  price: 40
item: Orange  price: 30