I found 7 doc comments in Eye.java:

• One for the Eye class.
• Two for the Eye constructors.
• Two for the public methods that respond to mouse movements: mouseDragged and mouseMoved.
• One for the public method look that makes the eyeball follow the mouse.
• One for the public method paintComponent that draws the eye.

There are a number of additional comments (beginning with //) that are valuable but not doc comments.