Wow, that is sort of a key class to have missing! What OS are you running and what JVM or JDK are you using to run Eclipse? Also, do you have JAVA_HOME set, and if so tho what? I suspect that Tomcat and JBoss AS are picking up stray java executable and it can't find its rt.jar file.
I double-checked and I did NOT have the JAVA_HOME set up. I set that up and I'm afraid I'm still having the same problem. Here's what I've done so far:
verified that my JAVA_HOME is set correctly
Verified that my PATH is set correctly
Reinstalled JBOSS & Tomcat
I'm running Windows 7 64-bit, with eclipse Helios (service release 2), and Java 6 Update 26 (64-bit). Eclipse and the web servers DID work fine at one time, a couple weeks ago, so I'm not sure what happened.
I'm downloading Eclipse again now, to see if perhaps something got corrupted.
Joined: Oct 21, 2010
OK, I set up Eclipse again with a fresh download, and now everything's working like a champ. Not sure what went wrong before, but as long as it's working now I'm happy.
Thanks for the help!
Oh by the way, my coworker has your book and loves it. He's the one that recommend I try JBOSS.