How do I use Gson in Java?

How do I use Gson in Java?

You can use Gson by adding the Gson library to your project and then using its methods to convert Java objects to JSON and vice versa.

Can you show me a simple example?

Sure! First, add Gson to your project. Then, you can use the following code:

import com.google.gson.Gson;

public class Main {
    public static void main(String[] args) {
        Gson gson = new Gson();
        MyClass obj = new MyClass("example", 123);
        String json = gson.toJson(obj);
        System.out.println(json);
    }
}

What if I want to convert JSON back to a Java object?

You can use the fromJson method. For example:

MyClass obj = gson.fromJson(jsonString, MyClass.class);

Are there any special configurations I need to be aware of?

Gson has various configurations, like custom serializers and deserializers, which you can set up using GsonBuilder.