I'm pretty sure that there is NO Swing on the Programmer Certification Exam (but don't take my word for it--I'm also sure that Java.Sun.com states the requirements for the exam).

A text I have says,
Even Swing components descend from java.awt.Component. All Swing components inherit from javax.swing.JComponent. JComponent is a subclass of java.awt.Component, so it follows that Swing components contain the inherited functionality of their Abstract Window Toolkit (AWT) predecessors.
But this text takes the approach that information overload is better than information underload.

The only other info that I can arm you with is that the components are pretty similar and are usually (if not all) prefixed with a "J". For instance JPanel instead of Panel.

Good Luck on your exam!