IntelliJ IDEA 13.1 Web Help

To toggle between upper case and lower case
  1. Select text fragment, or just place the caret at the line you want to change case in.
  2. On the main menu, choose Edit | Toggle Case, or press Ctrl+Shift+UCtrl+Shift+UCtrl+Shift+UCtrl+Shift+UCtrl+Shift+UCtrl+Shift+UCtrl+Shift+UCtrl+U, SCtrl+Shift+U, Ctrl+Shift+X or Ctrl+Shift+YShift Command UShift Command UShift Command X or Shift Command Y.

    Note

    Using Toggle Case for CamelCase name format, converts the name format to lower case. The lowercase names are converted to uppercase format. If you use Toggle Case for uppercase name format, the name format is converted to lower case.

See Also

Getting Started:

Web Resources: