【Java】Map集合的遍历

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

        map.put("001", "赵");
        map.put("002", "钱");
        map.put("003", "孙");
        map.put("004", "李");

        for (String s : map.keySet()) {
            System.out.println(map.get(s));
        }

        for (Map.Entry<String, String> entry : map.entrySet()) {
            System.out.println( entry.getKey() + " " + entry.getValue());
        }