JFrame f = new JFrame();
f.addWindowListener(new BasicWindowMonitor());
// Create a single button
Font font = new Font("Dialog", Font.PLAIN, 10);
final JButton b = new JButton("Add");
b.setFont(font);
Container c = f.getContentPane();
c.setLayout(new FlowLayout());
c.add(b);
// Increase the size of the button's font each time it's clicked
b.addActionListener(new ActionListener() {
int size = 10;
public void actionPerformed(ActionEvent ev) {
b.setFont(new Font("Dialog", Font.PLAIN, ++size));
b.revalidate(); // invalidates the button & validates its root pane
}
});
f.setSize(150, 120);
f.setVisible(true);
