Eclipse typically is a simple executable (java app) that can run from anywhere, usually accompanied by some data folders etc. so if it got downloaded to temp you could move this executable and its dependencies to you home folder ~/ or /usr/local/bin or /opt like stated above. Being that it can run anywhere because it's a java app, I usually keep this in my home folder. I just keep a /home/bin folder for applications such as these which don't intergrate themselves into the OS.
Additionally with eclipse I have heard numerous reported errors with it finding/setting the correct jdk path, so you may want to learn to use a more powerful IDE like Netbeans, if you tend to run into problems. I found Netbeans very anoying and frustrating at first because it seems very complicated and was very daunting. But you get over that once you do a couple Netbeans tutorials which you can find on the net. -- This message posted from opensolaris.org
