No, jedit is not a text editor - you've somewhat missed the point of it.
JEdit is very officially a "programmer's text editor", see their website. :-)
It happens that I'm a programmer and use it as a text editor, but bascially I use this text editor just as a user, and JBuilder as a developer. I need one single JEdit plugin: the BufferTabs because it's slighty
more comfortable than the builtin buffer switcher.
Years ago when I left Ultraedit I watched out for a pure Java text editor and found... JEdit.
Btw. Borland adverts JBuilder as a "leading development solution for Java", not as a text editor plus plugins. ;-)
I think it's great that there are so many plugins for JEdit, makeing it even some kind of "IDE", or FTP server, or IRC client, or disc doctor.
Still I doubt it's meaningful to put a programmer's text editor and a dedicated IDE (like JBuilder or Netbeans) into the same league.
I haven't commented on Eclipse, because I don't use it. Eclipse isn't just an IDE, that's correct. It's now even used for non-IDE things in B2B areas.