How to create objects from a class with private constructor?

Question

I have a class Game that is my main class and a second class Card. Class Card hast its properties and constructor private, only function init is public. Function init checks

Answer 1

As @Braj mentioned in comments, you can use static factory. Private constructor cannot be accessed outside of class, but it can be accessed from inside, like the following:

public class Test
{

    private Test(){

    }

    static Test getInstance(){
        return new Test();
    }
}

This pattern can be used for making Builders, for example.