eUML2 Modeler adds an UML flavour to java development within Eclipse. It's easy to generate Class and Sequence diagram from code.

Diagram Outline View

The current release contains an improved outline view with three different pages:

This page displays diagram elements (click to get full size):

This page contains a thumbnail of the diagram (click to get full size):

This page lists the dependency cycles, their members and sub cycles:
A page is dedicaed to the wizards who computed the cycles.