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Event Dispatch Thread - Swing  RSS feed

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I've been trying to figure out exactly what the deal is with the event dispatch thread but a lot of the tutorials are't crystal clear on it.

One says that after you have called x.show() you should not do anymore gui calls. I am guess this is because x.show() hands x the event dispatch thread?

So my question is, I have an actionlistener which gets called when a button is pressed, - book action -, now this actionlisterner creates a confirmdialog and says confirmdialog.show(). The app is then basically waiting for the user to confirm they want to book the room. When the option is selected the line after .show() says if option=1 then book. Now since I have already called show in this method would it be wrong for me to create another dialog and say booking confirmed?

or since the show method has to return in order for this method to continue can I assume that it does have the event dispatch thread and it is safe to call another show method?

Thanks for any clarification.
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