Eclipse comment/uncomment shortcut?
For single line comment you can use Ctrl + / and for multiple line comment you can use Ctrl + Shift + / after selecting the lines you want to comment in java editor.
On Mac/OS X you can use ⌘ + / to comment out single lines or selected blocks.
Use
Ctrl + SHIFT + L which will open a list of all major shortcuts for eclipse.
For single line java code comment and uncomment : Ctrl + / (ForwardSlash)
For multiple line java code comment : Ctrl + Shift +/ (Forward Slash) and
Multiline uncomment : Ctrl + Shift +\ (Backslash)
For single line xhtml code comment/uncomment : Ctrl + Shift +c
For multiple line xhtml code comment : Ctrl + Shift +/ (Forward Slash)
For multiple uncomment : Ctrl + Shift +\ (Backward Slash)
For Mac user it will be: ⌘ instead of Ctrl