Useful tools from Sun include :

• the graphics repository of commonly used icons
• Java Web Start for deploying and updating applications over a network
• JavaHelp for creating HTML help systems
• the Look and Feel Design Guidelines (also discussed here)
• the Swing Tutorial

There is a widespread tendency for GUI code - in particular initialization code - to be implemented with very long methods. This is probably a bad idea, for the same reason that all excessively long methods are a bad idea - they are harder to understand and maintain.

Unnecessary Fields

Fields should be created only if necessary. If a particular element is created, wired into the GUI, and then no longer referenced anywhere else in the class, then it should probably not exist as a field, but rather as a simple local variable. This style will allow the more important GUI elements (fields) to stand out from the less important ones (local variables).

Good habits

• follow the Look and Feel guidelines
• use a LayoutManager
• use Action objects
• create windows and dialogs with a uniform appearance