java 循环set_java 增强for循坏遍历set 集合嵌套

package com.lideng.work322;

import java.util.HashMap;

import java.util.HashSet;

import java.util.Iterator;

import java.util.Map;

import java.util.Map.Entry;

import java.util.Set;

public class MapDome1 {

public static void main(String[] args) {

HashMap map=new HashMap();

map.put("张三", 22);

map.put("李四", 21);

HashMap map1=new HashMap();

map1.put("王二", 20);

map1.put("麻子", 26);

Map> className=new HashMap>();

className.put("女", map);

className.put("男", map1);

//集合放到set里面

Set>> set=className.entrySet();

//遍历set里面的键

for (String entry : className.keySet()) {

//遍历map里面的键

for ( String entry1 :className.get(entry).keySet()) {

// key:entry1 value:className.get(entry).get(entry1)

System.out.println("key :"+entry1+" value:"+className.get(entry).get(entry1));

}

}

}

}