Java syntax sugar 自实现的语法糖

MapFactory.java

public class MapFactory {

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

    public HashMap<String, Object> getMap() {
        return map;
    }

    public MapFactory setMap(HashMap<String, Object> map) {
        this.map = map;
        return this;
    }

    public MapFactory put(String k1, Object v1) {
        map.put(k1, v1);
        return this;
    }
    
}



class test(){

 @Test
    public void test() {
        Long begin = System.currentTimeMillis();

        MapFactory mapFactory = new MapFactory();
        mapFactory.put("msgtype", "markdown")
                .put("markdown", new MapFactory().put("text", "1").put("title", "1").getMap())
                .put("at", new MapFactory().put("atMobiles", new String[]{"1", "2"}).getMap())
                .put("isAtAll", false);
        Long end = System.currentTimeMillis();

        System.out.println(JSON.toJSONString(mapFactory.getMap()));
        System.out.println((end - begin) + "ms");
    }
    
}

result:{"isAtAll":false,"at":{"atMobiles":["1","2"]},"markdown":{"text":"1","title":"1"},"msgtype":"markdown"}
0ms