Eclipse's "Outline" window equivalent in IntelliJ

I think you're looking for this:

To view the file structure, do one of the following

  • On the main menu, choose View | Tool Windows | Structure.
  • Pres StructureTool Button
  • Press Alt+7.
  • Press Ctrl+F12.

File structure popup shortcut:

  • Windows: CTRL+F12
  • Mac: +F12