CPSC 170 PreLab 3: GUI Review
In lab this week we will be working with some additional GUI 
components.   It has probably been a while since you last wrote 
a GUI panel or worked with Java events.   To prepare for lab this 
week, you should:
-   Understand how to include images on a GUI panel via a JLabel (
section 3.11)
-  Review how to enable components to respond to events 
(sections 4.8, 5.11).
-  Read the section about Radio Buttons and CheckBoxes (5.12).
Send me an e-mail (Prior to lab!) indicating  how Radio Buttons and Checkboxes 
differ in terms of the events they generate.