English | 简体中文 | 繁體中文 | Русский язык | Français | Español | Português | Deutsch | 日本語 | 한국어 | Italiano | بالعربية
Content com.google.gson.JSonElementclass to represent the elementsJson. We can use Gsonof the toJsonTree()/By adding an additional attribute, the method serializes the representation of the object into a tree of JsonElements. We can addgetAsJsonObject()methodJSonElement. This method returns the element asJsonObjectObtained.
public JsonObject getAsJsonObject()
import com.google.gson.*; public class AddPropertyGsonTest { public static void main(String[] args) { Gson gson = new GsonBuilder().setPrettyPrinting().create(); // pretty print JSON Student student = new Student("Adithya"); String jsonStr = gson.toJson(student, Student.class); System.out.println("JSON String: " + jsonStr); JsonElement jsonElement = gson.toJsonTree(student); jsonElement.getAsJsonObject().addProperty("id", ""115"); jsonStr = gson.toJson(jsonElement); System.out.println("JSON String after inserting additional property: " + jsonStr); } }// Student class class Student { private String name; public Student(String name) { this.name = name; } public String getName() { return name; } public void setName(String name) { this.name = name; } }
Output Result
JSON String: { "name": "Adithya" } JSON String after inserting additional property: { "name": "Adithya", "id": ""115" }