catch exceptions in EventDispatchThread

[bernd_no_junk]

Hi, I would like to catch all exception thrown
by the EventDispatchThread.
How do I do this?

Greetings

Bernd

 

[Alan Moore]

Hi, I would like to catch all exception thrown
by the EventDispatchThread.
How do I do this?

This approach uses an undocumented feature of EventDispatchThread.
Actually, it is described in the doc for the handleException() method,
but you have to go to the source code to read it. The doc also says
this feature will be removed in a future release (but it's still there
in Tiger).


public class MyApp
{
public static void main(String[] args)
{
System.setProperty("sun.awt.exception.handler",
"MyApp$EDTErrorHandler");

// etc.
}

/**
* This class will be instantiated the first time an
* exception is thrown on the EDT.
*/
public static class EDTErrorHandler
{
/**
* This method is invoked by the AWT event dispatch
* mechanism when an unexpected exception or error
* is thrown during event dispatching.
*/
public void handle(Throwable t)
{
// handle the exception
}
}
}

 

[Chris Smith]

Hi, I would like to catch all exception thrown
by the EventDispatchThread.
How do I do this?

There are a number of approaches. Here's one:

Toolkit.getDefaultToolkit().getSystemEventQueue()
.push(new EventQueue() {
protected void dispatchEvent(AWTEvent event)
{
try
{
super.dispatchEvent(event);
}
catch (Exception e)
{
handleException(e);
}
}
});


--
www.designacourse.com
The Easiest Way to Train Anyone... Anywhere.

Chris Smith - Lead Software Developer/Technical Trainer
MindIQ Corporation

 

[Bernd]

Thanks for your help.

Bernd