some people say to install optional programs in /opt
some people say to install them in /usr/local
http://www.linuxjournal.com/magazine/pointcounterpoint-opt-vs-usrlocal
http://www.ubuntugeek.com/linux-or-ubuntu-directory-structure.html
i'll show you how to install them in /usr/local because applications there don't get overwritten by updates.
1. get eclipse, download it (e.g. Eclipse IDE for Java EE Developers, Linux 64-bit) and unpack it (nautilus > right click on file > extract here)
let's assume the unpacked folder is here:
/home/you/Downloads/eclipse
you is your user's home directory, a.k.a. ~/
2. move eclipse to /usr/local:
sudo mv ~/Downloads/eclipse /usr/local/
3. create a simlink for the eclipse executable in the /usr/local/bin folder:
sudo ln -s /usr/local/eclipse/eclipse /usr/local/bin/eclipse
we do this so that when we enter the run dialog (Alt+F2), we can just type eclipse and hit enter, to start eclipse
you can, additionally, add a link to the unity launcher if you prefer to start it that way.
The best place to *find* answers to programming/development questions, imo, however it's the *worst* place to *ask* questions (if your first question/comment doesn't get any up-rating/response, then u can't ask anymore questions--ridiculously unrealistic), but again, a great reference for *finding* answers.
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