GUI应用程序的多线程

Question

I am developing a Java application and I am at the phase of writing the GUI code. For some reason I am getting crashes on the app with crash reports (not just errors on netbeans console). I wonder if there are problems with the way I am handling events as the report often says AWT dispatch thread crashed.

Should I be creating a new thread to handle the different events firing from GUI ?

For example by making use of :

Executors.newCachedThreadPool().execute(new Runnable() {
                    public void run() {}});

Is it possible that something like that fix the crashes? Would it have negative impact on application performance ?

Answer 1

You are probably accessing Swing from multiple threads. Neither AWT nor Swing are thread safe. Consider using the SwingWorker class in order to ensure that it is not accessed outside of the Event Dispatch Thread.

For more information, here's another answer I have given about SwingWorker .

Answer 2

Make sure all your method calls that update the GUI from different threads than the GUI thread are forwarded to the GUI thread using SwingUtilities.invokeLater . Other threads should never change the GUI directly.