I love the feature Ctrl+Tab, but Exclipse analogue Ctrl+F6 is too clumsy, so I just changed the keys in Eclipse. This could be done in that way:
Window -> Preferences -> Workbench (or General) -> Keys -> Window -> Next Editor / Previous Editor
Hint: Ctrl+PgUp/PgDn changes focus to previous/next editor respectively.
Hint: most useful eclipse shortcuts