Yet another brilliant Eclipse plugin: http://www.objectaid.com
Create a Diagram and then drag the wanted files onto it.
Remember to save as a JPG instead of GIF because some text is missing when using GIF.
I recommend the following disabling:
- Disable package (for smaller projects)
- attribute defaults (default values)
- icons (remove eclipse symbols and use normal UML)
- dependencies/add relationsships/labels/nesting