There may be some X interface peculiarities with Java execution depending
on the Linux system you are running and the specific window manager. The
Blackdown site points to some idiosyncrasies with JDK and the Java Runtime
Environment. http://java.blackdown.org/~sbb/
>Hello,
>
>While testing Jess during my "initiation", I have
>noticed what might be a bug.
>
>When I tried the example (below) given in the user
>manual
>(http://herzberg.ca.sandia.gov/jess/README.html),
>it worked fine under Windows NT, but with Linux
>(RedHat 5.1), I got the window but not the button.
>
>Does anyone know why?
>
>Regards,
>
>T. LEBARBE
>
>-----------------------------------------------
>
>Here's a complete program in Jess:
>
> (defglobal ?*f* = (new java.awt.Frame "Button
>Demo"))
> (defglobal ?*b* = (new java.awt.Button "Hello"))
>
>
> (deffunction say-hello (?evt)
> (printout t "Hello, World!" crlf))
>
> (?*b* addActionListener
> (new jess.reflect.ActionListener say-hello
>(engine)))
>
> (?*f* add ?*b*)
> (?*f* pack)
> (set ?*f* visible TRUE)
>
>The Jess engine function returns the jess.Rete
>object in which it is executed, as an external
>address. You'll have to quit using ^C. To fix
>this, you can add a
>WindowListener which handles WINDOW_CLOSING events
>to the above program:
>
> (deffunction frame-handler (?evt)
> (if (= (?evt getID) (get-member ?evt
>WINDOW_CLOSING)) then
> (call (get ?evt source) dispose)
> (exit)))
>
> (?*f* addWindowListener
> (new jess.reflect.WindowListener frame-handler
>(engine)))
>
>Now when you close the window Jess will exit.
>Notice how we can examine the ?evt parameter for
>event information.
>
>
>--
>---------------- Thomas LEBARBE -----------------
>
>Departement Informatique
>Universite de Caen, Campus II
>Tel: 02-31-56-73-77
>Email: [EMAIL PROTECTED]
>
>------ Traitement Automatique des Langues -------
>Courteline : Si on devait tol�rer des autres ce que l'on se permet �
>soi-m�me, cela deviendrait invivable !
>
>
>
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