Java 集合 之 Map

http://www.verejava.com/?id=1699457809234

package com.map;

import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

public class TestHashMap
{
	public static void main(String[] args)
	{
		//Hashtable map=new Hashtable(); 
                Map map=new HashMap(); 
		map.put("300", "lijun");
		map.put("100", "zhangshan");
		map.put("200", "wangliu");
		
		
		Set set=map.entrySet();
		Iterator iter=set.iterator();
		while(iter.hasNext())
		{
			Map.Entry entry=(Map.Entry)iter.next();
			Object key=entry.getKey();
			Object value=entry.getValue();
			System.out.println(key+"="+value);
		}
	}
}

http://www.verejava.com/?id=1699457809234