Adding a toolbar, stoped JPanel animation

jny0 <>
Mon, 27 Jul 2009 04:57:58 -0700 (PDT)

I got some advice a few days ago, which solved a dissapearing menubar
problem. But in implementing the solution the original JPanel
animation no longer works. It should start as soon as the toolbar is
created (see main), but the panel remains blank. I've tried using
invokeLater and invokeAndWait, but to no avail. Here's the (now
rather lengthy) code. I've removed the actionListeners code as it's
not relevant. Any ideas would be gratefully read.


import java.lang.reflect.InvocationTargetException;
import javax.swing.*;
import java.awt.*;
import java.awt.GridLayout;
import javax.swing.JPanel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;

public class Main {

final JFrame frmMainFrame = new JFrame("2D-CA Viewer-ImportData");
JPanel pnlCAPanel = new JPanel(new FlowLayout());
JMenuBar menuBar = new JMenuBar();
JMenu file = new JMenu("File");
JMenu control = new JMenu("Control");
JMenuItem getData = new JMenuItem("Get Data");
JMenuItem startCA = new JMenuItem("Iterate CA");

int i_Height = 5;
int i_Width = 5;

    private void createToolBar()
        frmMainFrame.setLayout(new GridLayout(5, 5));
        frmMainFrame.setSize(500, 500);

        getData.addActionListener(new ActionListener()
            public void actionPerformed(ActionEvent arg0)
                System.out.println("You have clicked on the getData");

        startCA.addActionListener(new ActionListener()
            public void actionPerformed(ActionEvent arg0)
                System.out.println("You have clicked on the startCA");



    private void createAndShowGUI()
        Color colors[] = { Color.WHITE, Color.RED, Color.BLUE,
Color.GREEN, Color.YELLOW , Color.CYAN, Color.MAGENTA,

        frmMainFrame.setTitle("CA Running");

            for (int iHeightCtr = 1 ; iHeightCtr <= i_Height ;
                for (int iWidthCtr = 1 ; iWidthCtr <= i_Width ;
                    JPanel panel = new JPanel();
                    panel.setSize(10, 10);
                    panel.setLocation(iHeightCtr * 20, iWidthCtr *

                frmMainFrame.setTitle("2D-CA Viewer-ImportData - " +

            print("creating code block for event thread");
            Runnable setTextRun = new Runnable()
                public void run()
                    //print("about to do setText()");
            //print("about to invokeAndWait()");
            SwingUtilities.invokeLater(setTextRun); //.invokeAndWait
            //print("back from invokeAndWait()");

        catch (InterruptedException ix)
            print("interrupted while waiting on invokeAndWait()");
// catch (InvocationTargetException x)
// {
// //print("exception thrown from run()");
// }

    public static void main(String[] args)
        SwingUtilities.invokeLater(new Runnable()
            public void run()
                new Main().createToolBar();
        new Main().createAndShowGUI

    private static void print(String msg)
        String name = Thread.currentThread().getName();
        System.out.println(name + ": " + msg);

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