final JFrame jf = new JFrame("JIFrameDemo Main Window");
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
jf.setSize(screenSize);
JMenuBar mb = new JMenuBar();
jf.setJMenuBar(mb);
JMenu fm = new JMenu("File");
mb.add(fm);
JMenuItem mi;
fm.add(mi = new JMenuItem("Exit"));
mi. addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
JDesktopPane dtp = new JDesktopPane();
jf.setContentPane(dtp);
JInternalFrame mboxFrame =
new JInternalFrame("Mail Reader", true, true, true, true);
JLabel reader = new JLabel("Mail Reader Would Be Here");
reader.setSize(400, 300);
mboxFrame.setContentPane(reader);
mboxFrame.pack();
dtp.add(mboxFrame);
JInternalFrame compFrame =
new JInternalFrame("Compose Mail", true, true, true, true);
JLabel composer = new JLabel("Mail Compose Would Be Here");
composer.setSize(300, 200);
compFrame.setContentPane(composer);
compFrame.pack();
compFrame.setLocation(50, 50);
dtp.add(compFrame);
JInternalFrame listFrame =
new JInternalFrame("Users", true, true, true, true);
JLabel list = new JLabel("List of Users Would Be Here");
list.setSize(500,200);
listFrame.setContentPane(list);
listFrame.setLocation(100, 100);
listFrame.pack();
dtp.add(listFrame);
jf.setVisible(true);
jf.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
jf.setVisible(false);
jf.dispose();
System.exit(0);
}
});
