IntelliJ IDEA · Basic code completion
Code
Windows · Linux
Ctrl+SpaceMac
Ctrl+SpaceBoth systems use the same combination.
Suggests the names that can stand where the caret is; press it a second time and it reaches classes you have not imported yet and writes the import for you. When it does nothing on a Mac, the cause is almost always macOS taking this combination for switching input sources before the IDE ever sees it — precisely why JetBrains ships a second Mac keymap.
- Group
- Code
- Keys held
- 2
IntelliJ IDEA ships a different default keymap per platform, and two of them on macOS — "macOS" and "macOS System Shortcuts" — so when nothing works, look at Keymap in Settings first; whichever you pick then serves PyCharm, WebStorm, GoLand and Android Studio unchanged.
Reading the key names
- Keys joined by + are pressed together: Ctrl+Shift+P means hold Ctrl and Shift, then P.
- On a Mac, Cmd is ⌘, Option is ⌥ (labelled Alt on some keyboards), Control is ⌃ and Shift is ⇧.
- Windows Ctrl usually becomes Cmd on a Mac, but not always — this reference lists both combinations separately.
- With a Korean, Japanese or Chinese input method active, shortcuts built on letter keys may not fire. Switch to Latin input and try again.
- When a combination does nothing, another program has often claimed it as a global shortcut first.
Common questions
Q. What is the shortcut for Basic code completion in IntelliJ IDEA?
Suggests the names that can stand where the caret is; press it a second time and it reaches classes you have not imported yet and writes the import for you. When it does nothing on a Mac, the cause is almost always macOS taking this combination for switching input sources before the IDE ever sees it — precisely why JetBrains ships a second Mac keymap. It is Ctrl+Space on Windows and Ctrl+Space on a Mac.
Q. Is it the same on Windows and Mac?
Yes, Ctrl+Space on both.
Q. How many keys is that?
2 pressed together. The combination sits under Code in IntelliJ IDEA.