Upgrade idea to 2021.2 shortcut keys

Because after the upgrade

ReCompile  Your options are gone

For a long time , I found that there is another shortcut key that can be used     ctrl+shift+F9 （ But your mouse cursor should be on the page you want to compile java The source code of the file instead of the file on the left is online , Bear in mind ）

Summarize the shortcut keys

First of all, let's start with IDEA Get about IDEA How to use shortcut keys ：

Click in to see how to use all shortcut keys ：

Ctrl

 Shortcut key 	     Introduce 

Ctrl + F	 Text search in the current file  （ necessary ）
Ctrl + R	 Replace text in the current file  （ necessary ）
Ctrl + Z	 revoke  （ necessary ）
Ctrl + Y	 Deletes the line where the cursor is located   or   Delete the selected line  （ necessary ）
Ctrl + X	 Cut cursor line   or   Cut selection 
Ctrl + C	 Copy the line where the cursor is   or   Copy the selection 
Ctrl + D	 Copy the line where the cursor is   or   Copy the selection , And insert the copy under the cursor position  （ necessary ）
Ctrl + W	 Progressive selection code block . You can select the word or paragraph where the cursor is , Continuous pressing will expand the selection range based on the original selection  （ necessary ）
Ctrl + E	 Show a list of recently opened file records 
Ctrl + N	 According to the input   Class name   Find class files 
Ctrl + G	 Jump to the specified line in the current file 
Ctrl + J	 Insert a custom dynamic code template 
Ctrl + P	 Method parameter prompt display 
Ctrl + Q	 The variable where the cursor is  /  Class name  /  Method name, etc （ You can also press ）, Show document content 
Ctrl + U	 Go to the method of the parent class of the current cursor  /  Interface definition 
Ctrl + B	 Enter the method where the cursor is / Variable interface or define , Equivalent to  Ctrl +  Left click 
Ctrl + K	 Version control commit project , This project needs to be added to version control to be available 
Ctrl + T	 Version control update project , This project needs to be added to version control to be available 
Ctrl + H	 Show the hierarchy of the current class 
Ctrl + O	 Choose an overridable method 
Ctrl + I	 Choose an inheritable method 
Ctrl + +	 Expand code 
Ctrl + -	 Collapse code 
Ctrl + /	 Comment the line code where the cursor is , Different annotation symbols will be used according to different file types  （ necessary ）
Ctrl + [	 Move the cursor to the beginning of the curly bracket in the current code 
Ctrl + ]	 Move the cursor to the end of the curly bracket in the current code 
Ctrl + F1	 The error code is displayed in the error code 
Ctrl + F3	 Go to the next reference position of the selected word 
Ctrl + F4	 Close the current edit file 
Ctrl + F8	 stay  Debug  In mode , Set cursor current behavior breakpoint , If it is already a breakpoint, remove the breakpoint 
Ctrl + F9	 perform  Make Project  operation 
Ctrl + F11	 Select Chinese file  /  Folder , Use mnemonics to set  /  Bookmark 
Ctrl + F12	 Pop up the current file structure layer , You can directly input... On the pop-up layer , Screening 
Ctrl + Tab	 Edit window switch , If you press the button in the process of switching delete, Close the selected window 
Ctrl + Enter	 Smart line separation 
Ctrl + End	 Jump to the end of the file 
Ctrl + Home	 Jump to the header 
Ctrl + Space	 Basic code completion , Default in  Windows  The system is occupied by the input method , Need to change , It is suggested to amend it to  Ctrl +  comma  （ necessary ）
Ctrl + Delete	 Delete the words or Chinese sentences behind the cursor 
Ctrl + BackSpace	 Delete the words or Chinese sentences in front of the cursor 
Ctrl + 1,2,3...9	 Navigate to the bookmark location of the corresponding value 
Ctrl +  Left click 	 On the title of the open file , Pop up the file path 
Ctrl +  Cursor positioning 	 Press  Ctrl  Don't let go , The information of the class where the summary is located will be displayed 
Ctrl +  Left key 	 The cursor jumps to the current word  /  The beginning of the left side of a Chinese sentence 
Ctrl +  Right Arrow 	 The cursor jumps to the current word  /  The right beginning of a Chinese sentence 
Ctrl +  Forward key 	 Equivalent to mouse wheel forward effect 
Ctrl +  Back key 	 Equivalent to mouse wheel backward effect 

Alt

 Shortcut key 	   Introduce 
Alt + `	 Display the pop-up layer of common operation menu of version control 
Alt + Q	 Pop up a hint , Displays the declaration of the current class  /  Context information 
Alt + F1	 Display the current file selection target pop-up layer , There are many targets in the pop-up layer to choose from 
Alt + F2	 For the front page , Show all kinds of browsers, open the target selection pop-up layer 
Alt + F3	 Select the text , Go down one by one to find the same text , And highlight 
Alt + F7	 How to find the cursor  /  Variable  /  Where the class is called 
Alt + F8	 stay  Debug  Under the state of , Selected objects , The debug box for inputting calculation expression will pop up , View the debugging results of this input 
Alt + Home	 location  /  Display to the current file  Navigation Bar
Alt + Enter	IntelliJ IDEA  According to the cursor problem , Provide quick fix options , The result is different when the cursor is placed in different position  （ necessary ）
Alt + Insert	 Code auto generation , Such as generating objects  set / get  Method , Constructors ,toString()  etc. 
Alt +  Left key 	 Switch the view of the currently opened file by pressing the left direction 
Alt +  Right Arrow 	 Press the right direction to switch the currently opened file view 
Alt +  Forward key 	 The current cursor jumps to the previous method name position of the current file 
Alt +  Back key 	 The current cursor jumps to the next method name position of the current file 
Alt + 1,2,3...9	 Display the tab of the corresponding value , among  1  yes  Project  Most used 

Shift

 Shortcut key 	          Introduce 
Shift + F1	 If there are external documents, you can connect external documents 
Shift + F2	 Jump to the previous highlight error   or   Warning location 
Shift + F3	 In search mode , Find a match to the previous one 
Shift + F4	 For the currently open file , Using the new Windows The window opens , The old window remains 
Shift + F6	 The file  /  Folder   rename 
Shift + F7	 stay  Debug  In mode , Smart walk in . There are multiple method calls on the line where the breakpoint is located , Will pop up into which method 
Shift + F8	 stay  Debug  In mode , Jump out of , The effect is the same as  F9  equally 
Shift + F9	 It's equivalent to clicking on a toolbar  Debug  Button 
Shift + F10	 It's equivalent to clicking on a toolbar  Run  Button 
Shift + F11	 Pop up the bookmark display layer 
Shift + Tab	 remove indent 
Shift + ESC	 Hide current   or   The last active tool window 
Shift + End	 Select the cursor to the end of the current line 
Shift + Home	 Select the cursor to the current line header position 
Shift + Enter	 Start a new line . Leave a line under the cursor line , Cursor to new line position 
Shift +  Left click 	 Press this shortcut key... On the open filename , You can close the currently open file 
Shift +  The wheels roll back and forth 	 The horizontal scroll axis of the current file 

Ctrl + Alt

 Shortcut key        	 Introduce 
Ctrl + Alt + L	 formatting code , You can use... For the current file and the entire package directory  （ necessary ）
Ctrl + Alt + O	 Optimize imported classes , You can use... For the current file and the entire package directory  （ necessary ）
Ctrl + Alt + I	 Cursor in line   or   Select parts for automatic code indentation , It's sort of like formatting 
Ctrl + Alt + T	 Pop up the surround option pop-up layer for the selected code 
Ctrl + Alt + J	 Pop up the template selection window , Add the selected code to the dynamic template 
Ctrl + Alt + H	 Call level 
Ctrl + Alt + B	 Using on a method name of a call jumps to the specific implementation , You can skip the interface 
Ctrl + Alt + V	 Quickly introduce variables 
Ctrl + Alt + Y	 Sync 、 Refresh 
Ctrl + Alt + S	 open  IntelliJ IDEA  System settings 
Ctrl + Alt + F7	 Show where to use . Find where the class or variable is called , Use the pop-up box to find out 
Ctrl + Alt + F11	 Switch to full screen mode 
Ctrl + Alt + Enter	 There is a line over the line where the cursor is , Cursor to new line 
Ctrl + Alt + Home	 Pop up the file pop-up layer associated with the current file 
Ctrl + Alt + Space	 Class name autocomplete 
Ctrl + Alt +  Left key 	 Return to the previous operation  （ necessary ）（ Pay attention to conflicts with other software shortcuts ）
Ctrl + Alt +  Right Arrow 	 Move on to the previous operation  （ necessary ）（ Pay attention to conflicts with other software shortcuts ）
Ctrl + Alt +  Forward key 	 In search mode , Jump to the last file found 
Ctrl + Alt +  Back key 	 In search mode , Jump to the next file to find 

Ctrl + Shift

 Shortcut key 	    		 Introduce 
Ctrl + Shift + F	 Search the whole project according to the input   or   Specify the files in the directory  （ necessary ）
Ctrl + Shift + R	 Replace the corresponding content according to the input content , The scope is the whole project   or   Specify the files in the directory  （ necessary ）
Ctrl + Shift + J	 Automatically merge the next line to the end of the current line  （ necessary ）
Ctrl + Shift + Z	 Cancel cancellation  （ necessary ）
Ctrl + Shift + W	 Progressive deselect code block . You can select the word or paragraph where the cursor is , Continuous pressing will expand the unchecked range on the basis of the original selection  （ necessary ）
Ctrl + Shift + N	 Locate... By filename  /  Open file  /  Catalog , To open a directory, you need to add a forward slash after the input  （ necessary ）
Ctrl + Shift + U	 Make the selected code bigger  /  Rotate lowercase  （ necessary ）
Ctrl + Shift + T	 Generate unit test classes for the current class , If there are existing unit test classes, you can choose 
Ctrl + Shift + C	 Copy the current file disk path to the clipboard 
Ctrl + Shift + V	 Pop up cache of the latest copy of the content manager pop-up layer 
Ctrl + Shift + E	 Display the pop-up layer of the recently modified file list 
Ctrl + Shift + H	 Show method hierarchy 
Ctrl + Shift + B	 Jump to type declaration 
Ctrl + Shift + I	 How to quickly see where the cursor is   or   The definition of a class 
Ctrl + Shift + A	 Find action  /  Set up 
Ctrl + Shift + /	 Code block comments  （ necessary ）
Ctrl + Shift + [	 Select from the cursor position to its top bracket position 
Ctrl + Shift + ]	 Select from the cursor position to its bottom bracket position 
Ctrl + Shift + +	 Expand all code 
Ctrl + Shift + -	 Collapse all code 
Ctrl + Shift + F7	 Highlight all the selected text , Press Esc Highlight disappears 
Ctrl + Shift + F8	 stay  Debug  In mode , Specify breakpoint entry conditions 
Ctrl + Shift + F9	 Compile selected files  /  package  / Module
Ctrl + Shift + F12	 Editor maximization 
Ctrl + Shift + Space	 Intelligent code prompt 
Ctrl + Shift + Enter	 Auto end code , Add semicolon automatically at the end of line  （ necessary ）
Ctrl + Shift + Backspace	 Go back to the last modification 
Ctrl + Shift + 1,2,3...9	 Quickly add bookmarks with specified values 
Ctrl + Shift +  Left key 	 On the code file , The cursor jumps to the current word  /  The beginning of the left side of a Chinese sentence , Select the word at the same time  /  Chinese sentence 
Ctrl + Shift +  Right Arrow 	 On the code file , The cursor jumps to the current word  /  The right beginning of a Chinese sentence , Select the word at the same time  /  Chinese sentence 
Ctrl + Shift +  Left key 	 The cursor focus is on the Tools tab , Narrow the tab area 
Ctrl + Shift +  Right Arrow 	 The cursor focus is on the Tools tab , Expand the tab area 
Ctrl + Shift +  Forward key 	 Cursor over method name , Move the method to the front of the previous method , Adjust the method order 
Ctrl + Shift +  Back key 	 Cursor over method name , Move the method to the front of the next method , Adjust the method order 

Alt + Shift

 Shortcut key 			 Introduce 
Alt + Shift + N	 choice  /  add to  task
Alt + Shift + F	 Show add to Favorites pop-up layer 
Alt + Shift + C	 See the list of changes in recent action items 
Alt + Shift + F	 add to favorites 
Alt + Shift + I	 View the current project file 
Alt + Shift + F7	 stay  Debug  In mode , next step , Enter the current method body , If there is a method in the method body , Will enter the embedded method , Follow this cycle into 
Alt + Shift + F9	 eject  Debug  Optional menu for 
Alt + Shift + F10	 eject  Run  Optional menu for 
Alt + Shift +  Next, double-left click on 	 Select the double clicked word  /  Chinese sentence , Hold on , You can choose other words at the same time  /  Chinese sentence 
Alt + Shift +  Forward key 	 Move the cursor line up 
Alt + Shift +  Back key 	 Move the cursor line down 

Ctrl + Shift + Alt

 Shortcut key 					 Introduce 
Ctrl + Shift + Alt + V	 No format paste 
Ctrl + Shift + Alt + N	 Go to the specified variable  /  Method 
Ctrl + Shift + Alt + S	 Open the current project settings 
Ctrl + Shift + Alt + C	 Copy reference information 

other

 Shortcut key 	 Introduce 
F2	 Jump to the next highlight error   or   Warning location  （ necessary ）
F3	 In search mode , Go to the next match 
F4	 Edit source 
F7	 stay  Debug  In mode , Go to the next step , If the current line breakpoint is a method , Then enter the current method , If the method body has a method , Will not enter the embedded method 
F8	 stay  Debug  In mode , Go to the next step , If the current line breakpoint is a method , Do not enter the current method 
F9	 stay  Debug  In mode , Restore program run , But if there is a breakpoint in the code below that breakpoint, stop at the next breakpoint 
F11	 Bookmark 
F12	 Go back to the previous tool window 
Tab	 Indent 
ESC	 Enter the code file window from the tool window 
 Press twice in a row Shift	 eject  Search Everywhere  Pop-up layer 

Abbreviation generation statement

main Method ：psvm + Tab key   

 Output statement System.out.println  -----  sout  ------  There is a code prompt , direct enter Just go 

 If it is formatted output ：printf---------souf + enter   that will do .

 More short prompt completion statements   Ctrl + J  ------------- Shortcut key to view 

 enhance for loop     You can use what you need name.for  extraction 

 Quickly generate getter ,setter  And construction methods ：    Ctrl + insert   --------- Then select the method you want to build -------- ----- This shortcut key can also generate many common and rewritten methods , Such as ：hasCode(),equals ()  etc. .