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"Unhandled event loop exception" when attempting to run Java app [message #150052]

Thu, 27 April 2006 19:34

Steinar Bang

Messages: 108
Registered: July 2009

Senior Member

Platform: Intel Pentium M, ubuntu 5.10 Breezy Badger,
eclipse 3.1.1-1ubuntu3,
Blackdown Java SDK j2sdk1.4 1.4.2.03-1

I've created the file Hello.java in an eclipse workspace named
hello_world.

Hello.java looks like this:

public class Hello {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("Hello world!");
}

}

When I open the RMBM on Hello.java and select
Run As->Java Application
I get an "Unhandled event loop exception" error in the error log.

The full details on this entry is:
An exception stack trace is not available.

It's followed by an entry with the title "Failed to execute runnable
(java.lang.NullPointerException)" in the error log.

Is this the wrong way to execute a Java program? Or is there
something wrong with my program or my setup?

Thanx!

- Steinar

The full details for the "Failed to execute runnable
(java.lang.NullPointerException)" error log message, is:

org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
at org.eclipse.swt.SWT.error(int, java.lang.Throwable, java.lang.String) (Unknown Source)
at org.eclipse.swt.SWT.error(int, java.lang.Throwable) (Unknown Source)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(boolea n) (Unknown Source)
at org.eclipse.swt.widgets.Display.runAsyncMessages(boolean) (Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch() (Unknown Source)
at org.eclipse.ui.internal.Workbench.runEventLoop(org.eclipse.j face.window.Window$IExceptionHandler, org.eclipse.swt.widgets.Display) (Unknown Source)
at org.eclipse.ui.internal.Workbench.runUI() (Unknown Source)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(org. eclipse.swt.widgets.Display, org.eclipse.ui.application.WorkbenchAdvisor) (Unknown Source)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(org.eclipse. swt.widgets.Display, org.eclipse.ui.application.WorkbenchAdvisor) (Unknown Source)
at org.eclipse.ui.internal.ide.IDEApplication.run(java.lang.Obj ect) (Unknown Source)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(ja va.lang.Object) (Unknown Source)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(java.lan g.Object) (Unknown Source)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(java.lan g.String[], java.lang.Runnable) (Unknown Source)
at java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (/usr/lib/libgcj.so.6.0.0)
at org.eclipse.core.launcher.Main.invokeFramework(java.lang.Str ing[], java.net.URL[]) (Unknown Source)
at org.eclipse.core.launcher.Main.basicRun(java.lang.String[]) (Unknown Source)
at org.eclipse.core.launcher.Main.run(java.lang.String[]) (Unknown Source)
at org.eclipse.core.launcher.Main.main(java.lang.String[]) (Unknown Source)
at gnu.java.lang.MainThread.call_main() (/usr/lib/libgcj.so.6.0.0)
at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0)
Caused by: java.lang.NullPointerException
at org.eclipse.ui.part.PageBookView.showPageRec(org.eclipse.ui. part.PageBookView$PageRec) (Unknown Source)
at org.eclipse.ui.internal.console.ConsoleView.showPageRec(org. eclipse.ui.part.PageBookView$PageRec) (Unknown Source)
at org.eclipse.ui.part.PageBookView.partActivated(org.eclipse.u i.IWorkbenchPart) (Unknown Source)
at org.eclipse.ui.internal.console.ConsoleView.display(org.ecli pse.ui.console.IConsole) (Unknown Source)
at org.eclipse.ui.internal.console.ConsoleManager$1.run() (Unknown Source)
at org.eclipse.swt.widgets.RunnableLock.run() (Unknown Source)
...18 more

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