gson example

gistfile1.txt

package serialization;

import com.google.gson.Gson;

class Student {

    private String name;
    private int age = (int) (Math.random() * 20 + 20);

    public Student(String name) {
        setName(name);
    }

    @Override
    public String toString() {
        return "Name: " + name + ", age: " + age;
    }
}

class AdmittedGroup {

    public Student first = new Student("Natalie");
    public Student second = new Student("Olga");
    public Student third = new Student("Stanislav");
    public Student fourth = new Student("Valentine");
    public Student fifth = new Student("Artem");

    @Override
    public String toString() {
        return first + "\n"
                + second + "\n"
                + third + "\n"
                + fourth + "\n"
                + fifth + "\n";
    }
}

class Program {

    public static void main(String[] args) {

        AdmittedGroup group = new AdmittedGroup();
        String jsonGroup = new Gson().toJson(group);
        System.out.println("Json:\n" + jsonGroup);
        AdmittedGroup returnTo = new Gson().fromJson(jsonGroup, AdmittedGroup.class);
        System.out.println("\nObject:\n" + returnTo);

    }
}