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Hi all,

This is probably an obvious question: all the sample codes do quit() in 
a GuiState like this:

     @Override
     public void quit() {
         super.quit();

        if (frame != null) {
frame .dispose();
         }
     }

I was just curious if the null check is required here. I don't see when 
the frame can be null, could you help me with that? It is always 
initialized properly in init() and quit() cannot be called without 
initializing the GuiState, right?

Thanks for the clarification in advance!

Best,
Richard

-- 
Richard O. Legendi
Software developer
Intelligent Applications and Web Services
AITIA International, Inc.
http://people.inf.elte.hu/legendi/