Why is my GUI still freezing even after using SwingUtilities.invokeLater?

Question

I have this ActionListenerone that gets called in EDT. The plot () function is computationally heavy; it can take five seconds. This made the GUI freeze as expected. I added the code SwingUtilities.invokeLaterand it still freezes. Shouldn't the GUI respond to the fact that I am creating a separate thread for calculating the heave?

final ActionListener applyListener = new ActionListener() 
        {
            @CommitingFunction
            public void actionPerformed(ActionEvent arg0) 
            {
                /*Don't do plotting in the EDT :)*/
                SwingUtilities.invokeLater(new Runnable() 
                {
                    public void run() 
                    {
                        plot();
                    }
                });
            }
        };

Answer 1

. InvokeLater . invokeLater , Swing " Event Dispatching Thread , " . invoke invokeLater , , , , EDT, .

ActionListener , Runnable on Swing. , , () .

(). SwingWorker ( , SwingWorker, , ), plot() . -, Swing Event, invokeLater(). , Later(), , .

Answer 2

, . , EDT, .

SwingUtilities.invokeLater() runnable EDT! SwingWorker.

Answer 3

invokeLater GUI. , - GUI.

ExecutorService.

@Adam, , , invokeLater.

Answer 4

, plot(), . , , EDT. SwingWorker

Answer 5

, - - , , , . , SwingUtilities EDT, init . EDT Swing. , , . , .

set isEDTCheck true , false ( .

    if (isEDTCheck) {
        new Thread("EDTHeartbeat") {
            @Override
            public void run() {
                Runnable thisThingYouDo = new Runnable() {
                    public void run() {
                        int x = 0;
                    }
                };
                while (true) {
                    // first thread says we are waiting, aka bad state
                    edtwait=true;
                    try {
                        javax.swing.SwingUtilities.invokeAndWait(thisThingYouDo);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    } catch (InvocationTargetException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    // first thread says we are not waiting, good state
                    edtwait=false;
                    try {
                        Thread.sleep(5000);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
            }
        }.start();

        new Thread("EDTValidator") {
            @Override
            public void run() {
                while (true) {
                    // is first thread in bad state?
                    if (edtwait) {
                        try {
                            Thread.sleep(3000);
                            // after 3 seconds are we still in bad state?  if so, get rid of initial frame, pop up a dialog box in AWT that does no commands
                            if (edtwait) {
                                mainFrame.setVisible(false);
                                new Dialog();  
                            } catch (InterruptedException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                    }
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
            }
        }.start();
    }


  public class Dialog extends Frame {
    private static final int WIDTH = 400;
    private static final int HEIGHT = 300;
    Frame f = null;
    public Dialog() {
        f = this;
        hasSomethingBeenEntered=false;
        this.setTitle("APP PROBLEM DETECTED");
        this.setSize(WIDTH, HEIGHT);
        this.setLocation((int)Toolkit.getDefaultToolkit().getScreenSize().getWidth() - myapp.width, 0);
        Panel p1 = new Panel() {
            @Override
            public void paint(final Graphics g) {
                int left = Dialog.WIDTH/2 - 45; // don't use WIDTH shadowed by Panel class
                int top = Dialog.HEIGHT/2 - 20; // same as above
                g.drawString("APP HAS DETECTED A PROBLEM", left, top);
            }
        };
        this.add("Center", p1);

        this.setAlwaysOnTop(true);
                 TextArea tb = new TextArea("APP HAS DETECTED A MAJOR PROBLEM\nIT WILL NOW RESTART IN 5 SECONDS");
        this.add(tb);
        this.setVisible(true);
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        restartApp();

    }

    private void restartApp() {
            Runtime.getRuntime().exec("cmd /c start cmd.exe /K \"cd C:\\Progra~1\\Common~1 && C:\\Progra~1\\Common~1\\MyAppDir\\myjavaapp.jar\"");
            System.exit(0);
       }