Keyboard shortcuts and various tips for IntelliJ IDEA. This document assumes IntelliJ on a Mac, using the Keymap setting for
Mac OS X 10.5+ (in Preferences > Keymap). I know you can get all these through Help > Keymap Reference in IntelliJ, but I like to maintain my own list so that I can organize and search it the way I prefer, plus have a place to add my own additional notes.
|Comment / uncomment selected text||Select block of text and then press Command + /|
|Spread selection from cursor (to word, then line, etc.)||ALT + up arrow or down arrow|
|Format selected code||CTRL + ALT + I|
|Format all code||ALT + CMD + L|
|Autocomplete method parameter info||CMD + P (when cursor is in method signature)|
|Invoke a Surround Template (ex: surround a line with try/catch)||OPTION + CMD + T|
|Complete a statement||SHIFT + CMD + ENTER|
|Import Java Package||Hover over the red text of the class missing a package and press: ALT + ENTER|
Live templates can be found in Preferences > Editor > Live Templates. Learn them! To use a live template, enter its short text in the editor and then press tab to replace the short text with its template.
Tool Windows and Dialogs
|Project||CMD + 1|
|Version Control||CMD + 9|
|Preferences||CMD + ,|
|Breakpoints||SHIFT + COMMAND + F8|
|Recent Files||CMD + E|
|Search Everywhere||SHIFT + SHIFT|
|Search Classes||CMD + O|
|Search Symbols||OPTION + CMD + O|
|Navigate back and forth through recent files||CMD + [ and CMD + ]|
|New file (where selection is in Project window)||CMD + N Note: you can use slashes to create entire trees abc/def/ghi/jkl…|
|Hide all other windows||SHIFT + CMD + F12|
|Stretch pane right or left||SHIFT + CMD + left or right arrow|
|Clipboard History||SHIFT + CMD + V|
|Method List (of the active editor file)||CMD + F12|
|Navigation Bar||CMD + up arrow Note: This is particularly useful if you turn off the normal navigation bar in preferences|
to save UI space.
|Action Search||SHIFT + CMD + A (try, for example, “RESTful Web Service”)|
|Version Control Quick List||CTRL + V|
|Quick Switch Settings||CTRL + ~|
|Quick Documentation||CTRL + J (and then again to pin it open at larger size).|
TO DO items
Create a TO DO item
- CMD + / to create a new comment line
- Type TODO then whatever comment you want
View all TO DO items
- View > Tool Windows > TODO or
- CMD + 6
Increase IntelliJ IDE memory on a Mac
- Help > Edit Custom VM Options…
- Answer Yes to create the idea.vmoptions file. This will automatically create a copy of the .vmoptions file in the config
folder and open a dialog to edit it.
- I change -Xmx750m to -Xmx2048m
Following are some of the Tip of the Day items that appear when you first open IntelliJ.
Highlight usages of some variable
- Use ⇧⌘F7 (Edit | Find | Highlight Usages in File) to quickly highlight usages of some variable in the current file.
- Use ⌘G and ⇧⌘G keys to navigate through highlighted usages.
- Press ⎋ to remove highlighting.
- Use Code | Optimize Imports to automatically optimize imports (remove unused imports, etc.). To access the corresponding settings, use File | Settings | Code Style | Imports.
- Use Code | Reformat Code to reformat code according to your code style preferences (File | Settings | Code Style).