Hi, Mike!
IntelliJ IDEA is a great editor and they have
specification for next release (Ariadna) posted
on web site
IntelliJ IDEA EAP, so take a look.
Now about your questions:
1) Servlet is a Java class, so you can do that
througth the class, they don't have any wizard
to support servlet creation, but you can use
Ctrl+O and Ctrl+I to override or implement methods
2) Sorry, I never used this one, so no comments.
3) When you go to "Project Properties", in "Path"
you'll see "JavaDoc API Paths", so you have
donwload it from Sun web site, open zip file and
put path here. IDEA not comming with JavaDoc.
Have a nice day and happy IDEA usage.
Alex Givant.