java 操作array、list 。subList 的使用

        String object = "{'main':[{'name':'A','address':'ShanHai'},{'name':'B','address':'ShanHai'},{'name':'C','address':'ShanHai'},{'name':'D','address':'ShanHai'}]}";        JSONObject jsonObject = JSONObject.fromObject(object);        System.out.println(jsonObject);        List sbulist = jsonObject.getJSONArray("main").subList(0, 3);        System.out.println(sbulist);        jsonObject.put("main", sbulist);        System.out.println(jsonObject);