public static void main(String[] args) {
        // TODO Auto-generated method stub

        Map<Integer, String> map = new HashMap<Integer, String>();

        map.put(5, "小黑");
        map.put(4, "小白");
        map.put(8, "小灰");
        map.put(7, "小紅");
        map.put(5, "小蘭");
        map.put
 
(10, "小醋");

        map.remove(8);
        System.out.println(map.get(4) + "\t" + map.get(7));
        System.out.println("map的長度是：" + map.size());

        for (String v : map.values()) {
            System.out.println("values=" + v);
        }
    Iterator<Integer>iterator=map.keySet().iterator
 
();
        while(iterator.hasNext()){
            int key =iterator.next();
            String value =map.get(key);
            System.out.println("key的值是："+key+"\t"+"value的值是："+value);
        }