using System;

using System.Text.Json;

public class Program

{

    public static void Main()

    {

        Person tom = new Person("Tom", 37);

        string json= JsonSerializer.Serialize(tom);

        Console.WriteLine(json);

        Person? restoredPerson=JsonSerializer.Deserialize<Person>(json);

        Console.WriteLine(restoredPerson?.Name);

        Console.WriteLine(json);

    }

    class Person

{

    public string Name { get;}

    public int Age { get; set; }

    public Person(string name, int age)

    {

        Name = name;

        Age = age;

    }

}

}

//https://metanit.com/sharp/tutorial/6.5.php