import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.parser.Feature;
import com.alibaba.fastjson.serializer.SerializerFeature;
public class App {
public static void main(String[] args) {
JSONObject jsonObject = JSONObject.parseObject("{\"name\":\"John\", \"age\":20}");
String name = jsonObject.getString("name");
int age = jsonObject.getIntValue("age");
System.out.println("Name: " + name);
System.out.println("Age: " + age);
JSONObject json = new JSONObject();
json.put("name", "John");
json.put("age", 20);
String jsonString = json.toJSONString();
System.out.println("JSON String: " + jsonString);
}
}
