We are developing very complex GUI application using java. Lot of screens are being developed using swing null layout. I want to convert into a proper swing based layout ( like XYLayout comes with JBuilder). As we are planning to use pure swing based GUI, I don't want to use XYLayout. Do u know any place where I can find source for XYLayout-like lay out managers.Or do u know any tool which will convert this null layout to GridbagLayout. B'cos it is vry difficult to develop any screens using GridBagLayout directly. I would really appreciate ur help.