I note in the last 11gPS1 release of JDev (well, at least I didn't see it in any earlier releases) that the text editor has a few additional facilities available under the Source menu:
Of particular note there are now entries to Trim Trailing Whitespace, and Convert Leading Tabs to Spaces, which for me have always been important text editor feature, as both of them make editing source code easier beyond their application. Some of these features such as the Macro playback options have been available for a longtime in JDev as revealed by looking through the Shortcut Keys options under Tools -> Preferences. However the point is they now get a menu option!
As a side note, some of the Source menu features can be applied automatically when saving a file. This option is accessible via the Tools -> Preferences -> Code Editor -> Save Actions options:
The Save Actions facility was available in earlier releases of JDev, well, at least 22.214.171.124.0 where I could test it on my local machine.