day16-05-集合(Map-entrySet)

import java.util.*;
class MapDemo2
{
    public static void main(String[] args) 
    {
        Map<String,String> m = new HashMap<String,String>();
        //添加元素

        map.put("01",zhangsan1);
        map.put("02",zhangsan2);
        map.put("03",zhangsan3);
        //将Map集合中的映射关系去除。存入到Set集合中。

        Set<Map.Entry<String,String>> entrySet = map.entrySet();
        Iterator<Map.Entry<String,String>> it = entrySet.iterator();

        while(it.hasNext())
        {
            Map.Entry<String,String> me = it.next();
            String key = me.getKey();
            String value = me.getValue();

            System.out.printlb(key+":"+value);
        }
    }
}