UPDATE:
You can now assign keyboard shortcuts to navigate to the specific tab number:
Original obsolete response:
There is no such feature in IDEA, however you can use Alt + Arrows and Ctrl + E (Recent Files) to navigate between tabs.
Other handy actions from the Go To menu:
-
Back / Forward (Ctrl + Alt + ←/→)
-
Last Edit Location (Ctrl + Shift + Backspace)
Another option is to use the GoToTabs third-party plug-in:
The plugin adds menu actions allowing you to go to a specific tab. You
can of course assign keyboard shortcuts the individual actions and for
example achieve the behavior known from other editors/IDEs where you
can switch between tabs with alt+num.