Create JSON String using GSON

Question

I am having a class like following,

public class Student {
    public int id;
    public String name;
    public int age;    
}

Now I want to c

Answer 1

JsonObject jsObj =  (JsonObject) new Gson().toJsonTree(stu2);
jsObj.remove("age"); // remove field 'age'
jsObj.addProperty("key", "value"); // add field 'key'

System.out.println(jsObj);

You can manipulate with JsonObject