Using GSON Effectively

Program of Deserialize/Serialize JSON.I am writing it below. First download the Gson then add it to the eclipse project.

Step 1: Create a Dog class with getters and setters as below.

package myobject;



public class Dog {



 String name;





 int age








 public String getName() {





  return name;





 }





 public void setName(String name) {





  this.name = name;





 }





 public int getAge() {





  return age;





 }





 public void setAge(int age) {





  this.age = age;





 }





}

Step 2: Write a common GsonSerializer as below with generics so any class type can be passed.

package common;





import com.google.gson.Gson;





import com.google.gson.GsonBuilder;


//Generics is used so any class type can be passed



public class GsonSerializer<T> {





 public T Deserialize(String json, Class classOfT) {





  Gson gn = new GsonBuilder().create();





  return (T) gn.fromJson(json, classOfT);





 }





 public String Serialize(T object) {





  Gson gn = new GsonBuilder().create();





  return gn.toJson(object);





 }





}

 3: Write a main method for calling the example

package gsoncaller;



import myobject.Dog;



import common.GsonSerializer;




public class MyGsonCaller {



 public static void main(String[] args) {



  Dog dog = new Dog();



  dog.setAge(1);



  dog.setName("mela");



  GsonSerializer<Dog> serializer = new GsonSerializer<Dog>();



  serializer.Serialize(dog);



  System.out.println("My json string ::>" + serializer.Serialize(dog));



  dog = serializer.Deserialize(serializer.Serialize(dog), Dog.class);



  String name = dog.getName();



  int age = dog.getAge();



  System.out.println("Name ::>" + name);



  System.out.println("Age ::>" + age);



 }



}

The out put is:

My json string ::>{"name":"mela","age":1}

Name ::>mela

Age ::>1