public static void main(String[] args) {

		int i = 5;
		Integer II = new Integer(i);
		IntHolder III = new IntHolder(i);
		Liczba licz = new Liczba(i);
		op(i);
		op(II);
		op(III);
		op(licz);
		System.out.println("i = "+ i + "\nii = " + II + "\nIII = " + III.value+"\nlicz = "+ licz.getI());
	}