News wrote that Eclipse 3.5 finally supports column selection. Unfortunately I don't know HOW to enable it. I tried pressing the ALT-key like I am used to in Visual Studio and all other Microsoft products but that had no effect.
How can I mark a vertical block in Eclipse?
To activate the cursor and select the columns you want to select use:
Windows: Alt+Shift+A
Mac: command + option + A
Linux-based OS: Alt+Shift+A
To deactivate, press the keys again.
This information was taken from DJ's Java Blog.