In Eclipse, when you hover on an element, only the Javadoc shows, and the element’s (unconstrained) signature.
Suppose I have a class X <T extends Object> {}. If I use Eclipse’s Javadoc generator, I get:
/**
* @param <T>
*/
The rendered Javadoc looks like this. Note the lack of type constraint information.

Is there any way to show the generic type constraints from the Javadoc viewer in Eclipse?
I entered an Eclipse bug/enhancement to address this issue. Incredibly, Markus Keller actually implemented/fixed this within 3-4 hours of the submission!