how to popup jframe from jmenubar
Question
I use jmenubar, and one of the option is about. I want to popup new window after click "about" and show some information. How to do that? Thanks for you help :) I enclose my code.
public class Frame extends JFrame{
public Frame(){
JFrame frame = new JFrame("Program");
final JFrame window = new JFrame("About");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(700,700);
window.setSize(200,200);
frame.setLocation(50,50);
window.setLocation(150,150);
frame.setResizable(false);
window.pack();
frame.setVisible(true);
JMenuBar menu = new JMenuBar();
frame.setJMenuBar(menu);
JMenu file = new JMenu("File");
JMenuItem exit = new JMenuItem("Exit");
exit.setMnemonic(KeyEvent.VK_C);
exit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
file.add(exit);
JMenu about = new JMenu("About");
//oprogramie.setMnemonic(KeyEvent.VK_C);
about.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//JOptionPane.showMessageDialog(null, "Your message goes here!","Message", JOptionPane.ERROR_MESSAGE);
window.setVisible(true);
}
});
menu.add(file);
menu.add(about);
}
}
1 answers
solution1
1 ACCPTED 2014-06-02 00:29:40
Take a look at How to Make Dialogs
General advice would be to use a JOptionPane as it provides a ready made dialog into which you can display stuff, for example...
JOptionPane.showMessageDialog(null, "Hello world", "About", JOptionPane.INFORMATION_MESSAGE);
For more complex output, you can use <html> text or even a container/component of some kind, like a JPanel , with other components laid out the way you want them
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