import com.alibaba.fastjson.JSON;
public class Main {
public static void main(String[] args) {
Person person = new Person("John", 25);
String jsonString = JSON.toJSONString(person);
System.out.println(jsonString);
}
}
class Person {
private String name;
private int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
}
