Intellij IDEA - Cheat Sheet (aka most useful shortcuts)

Note: Some of these keymapping are specific to IdeaVim plugin. If you don't use IdeaVim (what' wrong with you :)), I've tried to point out where they differ, but I could have missed a few

Coding Session

Parameter documentation for Method Calls

• Ctrl-P - Popup parameter documentation for method calls

Note: Ctrl-Shift-P under IdeaVim in windows

Create variable from expression

• Ctrl-Alt-V - Variable refactoring - creates a variable from an expression

Copy from clipboard history

• Ctrl-Shift-V - Choose from the last 5 copies

Live Templates

• Ctrl-J - shortcut to bring up a list of available live templates (only in insert mode in IdeaVim)
• Ctrl-Alt-T - select text block and hit Ctrl-Alt-T to bring up surround template suggestions

Comments

• Ctrl-/ or Ctrl-Shift-/ - Comment/Uncomment current line or selection

Smart Type Completion

• Ctrl-Shift-Space - Smart type completion to complete an expression with a method call or variable with a type suitable in the current context
• Ctrl-Shift-I - Look up definitions on the suggestions provided by smart type completion

Rename Refactoring

• Shift-F6 - Rename refactoring

Navigation

Find artifacts in the current project

• Ctrl-Alt-Shift-N - Finds project artifacts using fuzzy search

Go to declaration

• Ctrl-Alt-B - Navigate to the declaration of a class, method or variable (under the cursor) (Ctrl-B is the default keymap)
• Ctrl-Alt-Left - to go back to where you came from (Ctrl-Alt-Right to go forward again)

Recently opened files

• Ctrl-Shift-E - Popup of recently opened files (Ctrl-E is the default keymap)

Misc

Find actions (and its shortcut) by name

• Ctrl-Shift-A - Search for actions/shortcuts (meta-shortcut)