I would like to migrate to Eclipse 3.5 from Eclipse 3.4, but I am working on some critical development and want to make sure I can use 3.4 for a while.
Can I install both of them?
I would like to migrate to Eclipse 3.5 from Eclipse 3.4, but I am working on some critical development and want to make sure I can use 3.4 for a while.
Can I install both of them?
Yes, you can. Eclipse is completely self-contained in its "eclipse" directory (of which you can have multiple)
Try to keep separate workspaces, as downgrading later might not work.
You sure can, eclipse doesn't have an installer. When you download it just unzip to different directories.
You shouldn't have any problem with this since they're fairly self-contained. We run Europa and Ganymede side-by-side under Windows just fine. Europa since our reporting solution depends on a specific version of BIRT and Ganymede (soon Galileo) for Java development.
Since the Eclipse distribution is just one zip file that you can extract somewhere you can have as many versions of it around as you wish. It's totally self-contained.