How to resize window in Java from a click (in this case, a button)?

问题

I was just wondering how (and if) this is possible. I read somewhere about an ActionEvent with resize window(int, int) but I wasn't sure if that was an appropriate way to handle it.

Edit: sorry this is in an GUI interface set up by JPanel

回答1:

public static void main(String[] args) {
    final JFrame frame = new JFrame();
    JPanel panel = new JPanel();
    JButton button = new JButton("Click Me");
    button.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            frame.setSize(200, 200);
        }
    });
    frame.add(panel);
    panel.add(button);
    frame.pack();
    frame.setVisible(true); 
}

回答2:

To resize to the smallest possible size(but not minimized), use frame.pack(); for changing the size, use frame.setSize(, ); If you want to minimize, maximize, etc., setState() is supposed to work, but I'm not sure about it

来源：https://stackoverflow.com/questions/8966535/how-to-resize-window-in-java-from-a-click-in-this-case-a-button