• upper or lower case -> ⌘ Command + Shift + U

  • open call hierarchy -> ⌘ Command + ALT + F7

  • reformatting source code -> ⌘ Command + ALT + L

  • optimize imports -> Ctrl + Alt + O

  • camel case -> Shift + ALT + U (need to install plugin)

  • recent files -> Ctrl + E

  • column selection mode -> Shift + Alt + Insert