setLayout(new GraphPaperLayout(new Dimension(5,5)));
// Add a 1x1 Rect at (0,0)
add(new JButton("1"), new Rectangle(0,0,1,1));
// Add a 2x1 Rect at (2,0)
add(new JButton("2"), new Rectangle(2,0,2,1));
// Add a 1x2 Rect at (1,1)
add(new JButton("3"), new Rectangle(1,1,1,2));
// Add a 2x2 Rect at (3,2)
add(new JButton("4"), new Rectangle(3,2,2,2));
// Add a 1x1 Rect at (0,4)
add(new JButton("5"), new Rectangle(0,4,1,1));
// Add a 1x2 Rect at (2,3)
add(new JButton("6"), new Rectangle(2,3,1,2));