public class Main {

	public static void main(String[] args) {
		Singleton s = Singleton.getInstance();
		System.out.println(s.text);

	}

}

class Singleton{

	private static Singleton single_instance = null;
	public String text;

	private Singleton() {
		text = "Coś do wypisania.";
	}

	//tworzenie instancji klasy Singleton
	public static Singleton getInstance()
    {
        if (single_instance == null)
            single_instance = new Singleton();

        return single_instance;
    }
}