mykey.java

来自「由浅入深的介绍JAVAse的基本编程思想」· Java 代码 · 共 21 行

public class MyKey implements Comparable{
	private final int id;
	public MyKey(int id){
		this.id = id;	
	}	
	public int getId(){
		return id;	
	}
	@Override
	public int compareTo(Object o){
		return this.id - ((MyKey)o).id;		
	}
	@Override
	public boolean equals(Object o){
		return (o instanceof MyKey) && (this.id == ((MyKey)o).id);		
	}
	@Override
	public int hashCode(){
		return new Integer(id).hashCode();	
	}	
}