[Tutor] jython showMessageDialog question

[Rob Andrews]

I just posted this question to the jython-users@lists.sourceforge.net 
list, and I figured I'd drop it here as well. The problem I describe in 
it is an example of trying to use Java swing components from the Jython 
prompt. In some cases, I can use swing with jython to do GUI stuff with 
great satisfaction, but it's a little mysterious on other occasions.

Please forgive the cheesiness of the following example. I was aiming for 
brevity more than impressiveness.

I encounter errors along the following lines when I attempt to use 
showMessageDialog in Jython. I have tried to attack the problem from a 
number of different angles, and have about concluded that I must be 
missing some simple, fundamental truth about how this works in Jython.

 >>> import javax.swing as sshwing
 >>> moreInput = sshwing.JOptionPane.showInputDialog("More input:")
 >>> sshwing.JOptionPane.showMessageDialog( null, "Your input is 
inadequate.")
Traceback (innermost last):
   File "<console>", line 1, in ?
NameError: null


I will appreciate any illumination.

Rob Andrews