Question: I use TAB and Shift-Tab in Visual Studio to indent an entire selection. This does nothing in Eclipse, and I can't seem to find another way to do it.

Update: I wasn't really paying all that much attention to this initially and did not ask the question correctly.
I now realized that it is in XML files where TAB still does not indent a selection. I did not find a setting for this in the properties, so I assume it is not possible.

Answer: 
ctrl + i ---> it is for making accurate indentation to a block of source code.
Go to Window Menu -> Preferences -> Java -> Editor -> Typing and make sure the `'Tab key adjusts the indentation of the current line' checkbox is ticked.