Intellij IDEA - Shortcuts Arcenal

I noticed that in the most of cases it's more convenient to use the some Hot Key instead of Mouse (of course only if u know such one):

Navigation

Hot Key	Action
Ctrl+Shift+A	Find Action
Ctrl+Alt+S	Settings
Ctrl+Alt+Shift+S	Project Settings
Ctrl+Tab	Switch between Tabs
Alt+Home	Jump To Navigation Bar
Alt+Number	Open/Close to Corresponding Panel
Esc	Go back to Editor
Shift+Esc	Hide active or last active window
Alt+Left/Right	Navigate via Opened Tabs
Ctrl+F4	Close Active Editor Tab
Ctrl+N	Find a Class
Ctrl+Shift+N	Find a Source file
Ctrl+E	Recent Files
Ctrl+Shift+E	Recently Edited Files
Alt+Down/Up	Jump To Next/Previous method declaration
F4 or Ctrl+Alt+B	Jump To Implementation
Ctrl+Shift+I	Highlight Implementation
Ctrl+F12	Highlight Available Methods
Alt+F7	Find Usages
Ctrl+Shift+F7	Highlight Usages
Ctrl+]/[	Jump to Code Block end/start
Ctrl+Alt+Left/Right	Jump To Back/Forward
Ctrl+Shift+Backspace	Jump To Last edited place
Ctrl+Shift+B	Jump To Type declaration
Ctrl+U	Go to super method
F11 or Ctrl+F11	Toggle Bookmark
Ctrl+Shift#[0-9]	Toggle Numbered Bookmark
Ctrl+#[0-9]	Go to Numbered Bookmark
Shift+F11	Show Bookmarks
Ctrl+Shift+T	Create or Navigate to Test

Code Editing

Hot Key	Action
Shift+Enter	Start new line (jumps even from the middle on the current line)
Ctrl+D	Duplicate current line or selected block
Ctrl+Y	Delete current line
Ctrl+Shift+J	Smart line join
Ctrl+Enter	Smart line split
Ctrl+Shift+U	Toggle Case for word or selected block
Ctrl+Shift+Up/Down	Move Block Up/Down
Alt+Shift+Up/Down	Move Line Up/Down
Ctrl+Delete	Delete to word end
Ctrl+Backspace	Delete to word start
Ctrl+Numpad+/-	Expand/collapse code block
Ctrl+/	Comment/uncomment line
Ctrl+Shift+/	Comment/uncomment block
Ctrl+W	Select word or code block incrementally
Ctrl+Shift+W	Decrease selection to previous state

Quick lookup

Hot Key	Action
Alt+Q	Context info lookup
Ctrl+Q	Quick Documentation popup
Ctrl+P	Method Parameters info
Shift+F12	Available Methods lookup
Ctrl+Shift+I	Implementation lookup
Ctrl+Alt+F7	Usages lookup
Ctrl+E	Recent Files lookup
Ctrl+Shift+E	Recently Edited Files lookup
Ctrl+J	Insert Live Template lookup
Ctrl+Tab	Switch Tabs popup
Alt+BackQuote(`)	VCS quick popup

Code Completion

Hot Key	Action
Ctrl+Space or Ctrl+Shift+Space	Simple or Smart code completion
Alt+Insert	Generate code (Getters, Constructors, hashCode/equals, toString)
Ctrl+Alt+T	Surround with (if..else, try..catch, for, etc.)
Ctrl+Alt+J	Surround with Live Template
Alt+Enter	Show intention actions & quick fixes (inline, surround with, generate, etc.)
Ctrl+Alt+O	Optimize imports
Ctrl+Alt+L	Reformat code
Ctrl+Alt+M/V/F/C/P	Extract Method/Variable/Field/Constant/Parameter
Shift+F6	Rename all
Alt+Delete	Safe delete
Ctrl+J	Insert Live Template

VCS

Hot Key	Action
Ctrl+T	Update
Ctrl+K	Commit
Ctrl+Shift+K	Push (Git specific)
Alt+BackQuote(`)	VCS quick popup

seeAlso: intellij IDEA - shortcuts arcenal (MAC)