I'm using Intellij 2016.1 and I was wondering if there's a shortcut to see the method body in a popup window , instead of jumping to source code like Ctrl + Left Mouse Button does .
The feature is called Quick Definition Lookup (Main menu > View > Tool Windows in the keymap settings). The default combination is Ctrl+Shift+I (or ⌘+Y for Mac).
It appears like
Any editing actions in the popup window lead to jumping into the file where the code is defined.