public class Pair<S, I> {
	S first;
	I last;

	public Pair(S first, I last) {
		this.first = first;
		this.last = last;
	}

	public S getFirst() {
		return first;
	}

	public I getLast() {
		return last;
	}

	public void setFirst(S first) {
		this.first = first;
	}

	public void setLast(I last) {
		this.last = last;
	}
}






public class TestPair {

	public static void main(String[] args) {
		Pair<String, Integer> pg = new Pair<String, Integer>("Jan", 3);
		System.out.println(pg.getFirst() + " " + pg.getLast());
		String name = pg.getFirst();
		int m = pg.getLast();
		pg.setFirst(name + " Kowalski");
		pg.setLast(m + 1);
		System.out.println(pg.getFirst() + " " + pg.getLast());
	}

}