Show message window while system is working

Question

Dear all,
i would like to show a message (e.g. "Please wait....") in a window while the application is working. When the application has finished the calculations, i would like to hide this message and to return the control to the user.
How can i do that?
My main window is a Frame.
Thanks in advance.
Angelo

Answer 1

Hi,
this is the code:
public class WaitDialog extends JDialog {
JPanel panel1 = new JPanel();
JLabel textLabel = new JLabel();
XYLayout xYLayout1 = new XYLayout();
public WaitDialog(Frame frame, String title, boolean modal) {
super(frame, title, modal);
try {
jbInit();
catch(Exception ex) {
ex.printStackTrace();
void jbInit() throws Exception {
panel1.setLayout(xYLayout1);
panel1.setBackground(new Color(98, 255, 138));
textLabel.setFont(new java.awt.Font("Dialog", 1, 30));
textLabel.setText("Please wait....");
this.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
this.setResizable(false);
xYLayout1.setWidth(400);
xYLayout1.setHeight(150);
getContentPane().add(panel1);
panel1.add(textLabel, new XYConstraints(183, 71, -1, -1));
this.setSize(400, 150);
validate();
pack();
In the main frame:
WaitDialog wd = new WaitDialog(thisFrame, true);
wd.show();
wd.validate();
validate();
........other code (open serial port, send 2 serial message)
wd.dispose();
I want a dialog window, but it didn't show the message: i think because the application is running the following code, so it doesn't refresh the dialog window.
How can i solve the problem?
Thanks in advance.
Angelo