Remove trailing whitespace on save in IntelliJ IDEA 12

Question

Is it possible to remove trailing whitespace automatically on save in IntelliJ IDEA? I know there are some workarounds, for example, using git to trim the whitespace on commit.

Answer 1

Go to ==> PREFERENCES | GENERAL | OTHER |

Just as shown in the picture:

1. Srip trailings spaces on Save: ALL
2. Uncheck Allways keep....

It'll remove trailing spaces when save, not before