Eclipse comment/uncomment shortcut?

CTRL + 7

does comment/uncomment in the Java Editor.

Use

Ctrl + SHIFT + L which will open a list of all major shortcuts for eclipse.

1. For single line java code comment and uncomment : Ctrl + / (Forward Slash)

2. For multiple line java code comment : Ctrl + Shift + / (Forward Slash) and

   Multiline uncomment : Ctrl + Shift + \ (Backslash)

3. For single line xhtml code comment/uncomment : Ctrl + Shift + c

4. 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

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.