Hello wonder if anyone can help....

Ive built a program in java using a gridbag interface (hard code the interface) i would like to change it so i can use java swing interface (drag and drop) basically because of the amount of things going on the interface, it gets very messy after a while...

Can anyone tell me an easy way of how to do it, or a web site/book to use to help me.

Regards

Jeffers