Eclipse shortcut keys are not working suddenly in Windows [closed]

Solution 1:

My problem was solved when I restored defaults values of my Keys.
Go to Window -> Preferences -> General -> Keys.
Then, click Restore Defaults button at the bottom, and restart Eclipse.
I am using Eclipse Juno.

Solution 2:

This is a bug in Eclipse Juno, restarting Eclipse does solve it temporarily, I'll try an dig out the bug report.

Bug report https://bugs.eclipse.org/bugs/show_bug.cgi?id=385278

Comment from bug description...

I am also facing a lot of problems regarding the keyboard shortcuts. The issue is intermittent and all of a sudden most of the key board shortcuts(specifically f3, ctrl+D, ctrl+O ) stop working unless I restart my IDE.

Solution 3:

Based on the link posted by david99world

Changing perspective and going back does also solve this, that does looks like is a focus problem.