Someone

class Tafels extends Panel {
	Button[][] getallenRij;
	public Tafels() {
		setLayout(new GridLayout(10, 10));
		getallenRij = new Button[10][10];
		for(int i=0; i<getallenRij.length;i++) {
			for(int y = 0; y<getallenRij[i].length;y++) {
				getallenRij[i][y] = new Button(""+y+1+" x "+i+1);
				add(getallenRij[i][y]);
			}
		}
	}
}