All I want to do is have a JOptionPane pop up when the user clicks on a certain menu item.
The JOptionPane will show some basic configuration and then when the user clicks ok, the appropriate command will be run.
What I can't work out is how to do this in WindowBuilder.
The only way I can see is to create a separate class file but that seems like overkill.
How do I 'add' the JOptionPane so that I can see it and edit its design in WindowBuilder?