I am trying to map my Visual Studio experience onto Eclipse. Right now, I wish to add a file existing somewhere on the file system into a project in Eclipse. I expect it to
Even easier. Just drag and drop the file from explorer into the correct package in Eclipse. It will ask you if you want to copy or link the file(s).
Just found the quickest way to add files:
Copy-paste your file into your project disk directory using your file browser.
In Eclipse project browser select your project.
Click [right mouse button]->Refresh (or press F5 on Windows machine).
Voila
(worked on Neon-4.6.2)