package com.sky.pgm;

import java.util.HashMap;

public class HashCodeImpl {

	public static void main(String[] args) {
		 HashMap<Price, String> hm = new HashMap<Price, String>();
	        hm.put(new Price("Banana", 20), "Banana");
	        hm.put(new Price("Apple", 40), "Apple");
	        hm.put(new Price("Orange", 30), "Orange");
	        
	        //creating new object to use as key to get value
	        Price key = new Price("Banana", 20);
	        System.out.println("Hashcode of the key: "+key.hashCode());
	        System.out.println("Value from map: "+hm.get(key));
	}
}
	
	class Price{
		private String item;
		private int price;
		
		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 Price(String item, int price) {
			super();
			this.item = item;
			this.price = price;
		}
		
		public String toString(){
	        return "item: "+item+"  price: "+price;
	    }
		
		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;
	        }
	    }
	}