Pair.java

package com.hphoto.server;

public class Pair<K extends Comparable, V> implements Comparable<Pair> {
	
	   public Pair(K key1, V value1) {
	      this.key = key1;
	      this.value = value1;
	   }
	   
	   public K key;
	   public V value;
	   
	   public boolean equals(Object obj) {
	      if(obj instanceof Pair) {
	         Pair p = (Pair)obj;
	         return key.equals(p.key)&&value.equals(p.value);
	      }
	      return false;
	   }
	   
	   @SuppressWarnings("unchecked")
	   public int compareTo(Pair p) {
	      int v = key.compareTo(p.key);
	      if(v==0) {
	         if(p.value instanceof Comparable) {
	            return ((Comparable)value).compareTo(p.value);
	         }
	      }
	      return v;
	   }
	   
	   @Override
	   public int hashCode() {
	      return key.hashCode()^value.hashCode();
	   }
	   
	   @Override
	   public String toString() {
	      return key+": "+value;
	   }
	}