How to alwaws show line numbers in Eclipse and STS ( SpringSource Tool Suite )

Solution for:

 STS 3.x.x and Eclipse Juno

It probably works in previous and future version of STS and Eclipse.

1.  Go to Menu
2. Press Window
3. Press Preferences
4. Press General (from tree on the left)
5. Press Editors (from tree on the left)
6. Press Text Editors (from tree on the left)
7. Press Show line numbers check box on the right .

Window -> Preferences -> General -> Editors -> Text Editors -> Show line numbers