Re: Kaffe jvm failing with matchbox-0.8.1

Hi;

This definetly sounds like a realy odd problem, I dont know how much I
can help as my experience with Java is very limited.

Am I correct in understanding if you run you apps under matchbox WM
*without* the panel or desktop they are fine - but they then throw
these 'null pointer exceptions' *with* the panel or desktop running ?

Have you tried running with mb 0.8.4 - that had some fixes for AWT
stuff iirc but Im not sure if its related.

What versions of panel/desktop are you using ?

Is it possible you can send me an app which exhibits the above
behaviour ?

Many thanks;

  -- Matthew

on Thu, Nov 18, 2004 at 03:50:50PM +0530, Anil S wrote:
> 
> We are in the process of cross-building the kaffe jvm to an embedded 
> system that runs embedded linux on StrongARM cpu.  We are using 
> matchbox-0.8.1 (matchbox-window-manager, matchbox-panel, 
> matchbox-desktop etc.) as the windowing environment on top of Xfree86- 
> 4.4.0. We could successfully build and deploy the kaffe  libraries and 
> environment in our device. But during the testing we observed that kaffe 
> is failing to load java classes that requires AWT support. The explation 
> of this behaviour is given below.
> 
> We tried an application MenuTest.class to test the AWT components and 
> features like Menubar, Pack, and Repaint. All these are running fine on 
> an X86 linux box with the same kaffe source.
> 
> But the kaffe is throwing null pointer execptions when trying to add 
> Notification Handlers. This is usually handled by the window manager, 
> hence the focus shifted to window manager.
> 
> 
> 1.We disabled all the window managers running on the device and just had 
> the plain X server running. Then we ran the MenuTest.class application. 
> The application started running successfully.
> 2. We enabled the TWM Window manager which is a plain X based window 
> manager and then run the application. It ran successfully.
> 3. We enabled the matchbox window manager only and disabled the other 
> utilities which comes along with it like the desktop and the panel. The 
> application ran successfully.
> 4. We then enabled one of the utilities, panel and then tried to run the 
> application and found that it failed. Similarly we tried desktop and 
> other utilities, in all cases kaffe failed.
> 
> We have come to a conclusion that there is a problem with the matchbox 
> window manager utilities.  Can somebody please help us to resolve this 
> issue.
> 
> 
> Thanks and regards,
> Anil S
> Encore Software Ltd.
> Bangalore
> 
> 
> 
> 
> 
> 
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