Very comprehensive: link 1
1. Find the method in the current class Ctrl + F12
2. Turn variables into global internal variables: Ctrl + Alt + F
3. Rename: shift + F6
4. Code formatting: Ctrl + shift + L
5. Extract ordinary strings as global constants: Ctrl + Alt + C
6. Return to which file is currently being edited: Alt + F1, 1 (Alt + F1, press 1 directly) Return to the cursor focus that was just edited: Esc
7. Enter some actions: Ctrl + Shift + A
8. Extract variables into local variables: Ctrl + Alt + V
9. After selecting the code, Surround with: Ctrl + Alt + T
10. Quickly construct get, set, toString, constructor: Alt + Insert