super("UpdateSlowGUI");
final JButton b;
final JLabel status;
Container cp = getContentPane();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
cp.add(BorderLayout.CENTER, b = new JButton("Update..."));
cp.add(BorderLayout.SOUTH, status = new JLabel("Ready"));
b.addActionListener(new ActionListener() {
// Pressed when the user wants to do the action...
public void actionPerformed(ActionEvent evt) {
status.setText("Busy...");
b.setEnabled(false);
Thread t = new Thread() {
public void run() {
// Simulate something slow, like a large DB query
try {
Thread.sleep(5000);
} catch(InterruptedException ex) {
return;
}
// OK, the long-running thing has finished.
// Now go back into AWT/Swing to update the GUI
SwingUtilities.invokeLater(new Runnable() {
public void run() {
status.setText("Ready");
b.setEnabled(true);
}
});
}
};
t.start();
}
});
setSize(150, 200);
setLocation(200, 200);
