There is also a very good chance that you will encounter JBuilder, Netbeans,
Sun Studio, JEdit, ....

All these IDEs have much to recommend them. If you are concerned about being
highly employable, I suggest you do two things:

- Learn at least two of the major IDEs out there. If you learn Eclipse you are
also learning much of IBM's WebSphere Application Developer (WSAD). If you
learn Netbeans you are also learning much of Sun's Studio IDE.

- Learn to use a neutral editor like emacs or vi and to build your
applications from the command line using Ant. This will give you understanding
so that IDE activities are less mysterious.

I have worked in many shops that had Eclipse or WSAD as a standard but I used
my own preferred editor or IDE on my workstation. I do that in my current job.
Chance has very little to do with what I use. I also routinely flip between a
text editor and the IDE. I also do command-line builds for anything I intend
to really release.

If you don't know what is really going on, no IDE can really help you.

- Lew

I recently did some work at a place that had standardized on Eclipse.  Many
of the developers there preferred IntelliJ, though, and continued to use it.