public Week10Problem2() {
		super();
		
		this.setLayout(new GridLayout(5, 5));
		
		for (int i = 0; i < 5; i ++) {
			for (int j = 0; j < 5; j ++) {
				JButton button = new JButton((i + 1) + " " + (j + 1));
				button.addActionListener(new BHandler());
				this.add(button);
			}
		}
	}