Re: Closing one window and opening another


<zilvar@xxxxxxxxx> wrote in message
news:1156965574.470737.50440@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Using Netbeans 5.0, I'm trying to teach myself some Java more
complicated than System.out.println("Hello World.");

I'd like some help figuring out the best way to build a login-style
screen. It seems that I could create a main class and the two forms.
My main could call LoginScreen, which listens for a button press, hides
itself on command ... and this is where I get iffy. I doubt action
listeners can return a value, so I think I need to implement a personal
'yo, successful login' event and wrap that around login in a try/catch
block, which would catch the event and ask the 2nd window to show
itself.

Is that a reasonable implementation of the idea, and if not, some
pointers to whatever I'm missing would be much appreciated. :)


I've done this with a CardLayout presenting the login screen first.
The Login component is a separate class to which I can add a listener for
successful login. This keeps the login screen responsible for displaying
bad login information. You only need a regular ActionListener.
Of course you should have model classes that decouple presentation from
logic and that do the actual validation... If this is anymore than a toy
app.
Oh and remember exception handling is for exceptional conditions.

--
Mike W


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