com.alibaba fastjson 1.2.11 

 com.alibaba fastjson 1.1.51.android 

 com.fasterxml.jackson.core jackson-databind 2.7.3 

 com.google.code.gson gson 2.6.2 

import com.alibaba.fastjson.*; JSONObject jsonObj = JSON.parseObject(jsonStr);

import com.alibaba.fastjson.JSON; Model model = JSON.parseObject(jsonStr, Model.class

import com.alibaba.fastjson.JSON; Type type = new TypeReference>() {}.getType(); List list = JSON.parseObject(jsonStr, type);

import com.alibaba.fastjson.JSON; Model model = ...; String jsonStr = JSON.toJSONString(model);

import com.alibaba.fastjson.JSON; Model model = ...; byte[] jsonBytes = JSON.toJSONBytes(model)

import com.alibaba.fastjson.JSON; Model model = ...; OutputStream os; JSON.writeJSONString(os, model);;

import com.alibaba.fastjson.JSON; Model model = ...; Writer writer = ...; JSON.writeJSONString(writer, model);