What are the most useful IntelliJ IDEA shortcuts?
The most essential IntelliJ IDEA shortcuts include Cmd+Shift+A to find any action, Cmd+N to generate code (getters, setters, constructors), and Cmd+B or Cmd+Click to go to a declaration. Use Cmd+E for recent files, Cmd+Shift+O to find any file by name, and Double Shift to search everywhere. Press Cmd+/ to comment/uncomment code, Ctrl+Space for code completion, and Shift+F6 to rename symbols across the project.
How do I navigate code faster in IntelliJ IDEA?
Press Cmd+B to jump to a method or variable declaration, Cmd+Option+B to go to its implementation, and Cmd+U to navigate to a super method. Use Cmd+[ and Cmd+] to move back and forward through navigation history, like a browser. Press Cmd+F12 to open the file structure popup and type to jump to any method. Use Cmd+Shift+Backspace to jump to the last edit location, and Cmd+G to go to a specific line number.
How do I refactor and debug in IntelliJ IDEA?
For refactoring, press Shift+F6 to rename, Cmd+Option+M to extract a method, Cmd+Option+V to extract a variable, and Cmd+Option+C to extract a constant. While debugging, press Ctrl+D to start debugging, Cmd+F8 to toggle a breakpoint, F8 to step over, F7 to step into, and Shift+F8 to step out. Use Option+F8 to evaluate an expression at the current breakpoint, and Cmd+F2 to stop the debugger.
IntelliJ IDEA keyboard shortcuts not working - how to fix?
If IntelliJ IDEA shortcuts aren't working, go to IntelliJ IDEA > Settings > Keymap and verify you're using the macOS keymap (not Windows or Linux). Plugin conflicts can override default shortcuts — try disabling recently installed plugins and restarting. Also check that macOS hasn't intercepted the shortcuts in System Settings > Keyboard > Keyboard Shortcuts. Use Help > Find Action (Cmd+Shift+A) to search for an action and see its current binding if a specific shortcut isn't responding.

