import com.alibaba.fastjson.*;

class Student{

    private int age;

    private  String name;

    public int getAge() {

        return age;

    }

    public void setAge(int age) {

        this.age = age;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    @Override

    public String toString() {

        return "Student{" +

                "age=" + age +

                ", name='" + name + '\'' +

                '}';

    }

}

public class FastjsonTest {

    public static void main(String[] args) {

        Student s  = new Student();

        s.setAge(18);

        s.setName("haha");

        String jsonstring = JSON.toJSONString(s);

        System.out.println(jsonstring);

        Student s2 = (Student)JSON.parseObject(jsonstring,Student.class);

        System.out.println(s2.getAge());

        System.out.println(s2.toString());

    }

}