2019-08-28-遍历map

public static void main(String[] args) {

Map map1  =new HashMap<>();

    map1.put("key1",1);

    map1.put("key2",2);

    map1.put("key3",3);

    for (String key : map1.keySet()) {

System.out.println(key);

        System.out.println(map1.get(key));

        if(key.equals("area")){

}

}

}