When using IntelliJ Idea, using shortcut keys is essential. Mastering some commonly used shortcut keys can greatly improve our development efficiency. Some shortcut keys can be used proficiently, but there are other shortcut keys that are very useful, but because there is no usage habit or no understanding of the usage of shortcut keys, or even no concept of some shortcut keys before, they will not be used. . For these shortcut keys, if you can use them well, the efficiency of editing code will be improved to a higher level. So sort it out here, strengthen your use, and form a habit.
(Note: The shortcut keys of some operations have been changed, which are different from the default shortcut keys of IntelliJ Idea)
action
hot key
illustrate
Move Caret to Code Block End
Ctrl+]
For example, a code block enclosed by {}, use this shortcut key to quickly jump to the end of the code block
Move Caret to Code Block Start
Ctrl+[
Same as above, quickly jump to the beginning of the code block
Complete Current Statement
Ctrl+Shift+Enter
Fill the input if, for, function, etc. with {} or ; to make the code statement complete
Start New Line
Shift+Enter
Start a new line below the current line
Start New Line Before Current
Ctrl+Alt+Enter
Insert a new line above the current line
Delete to Word End
Ctrl+Delete
Delete all characters from the cursor to the end of the word
Delete to Word Start
Ctrl+BackSpace
Delete all characters from the cursor to the beginning of the word
Move Caret to Previous Word
Ctrl+Left Arrow
move cursor to previous word
Move Caret to Next Word
Ctrl+Right Arrow
move cursor to next word
Scroll Up
Ctrl+Up Arrow
scroll up one line
Scroll Down
Ctrl+Down Arrow
scroll down one line
Extend Selection
Ctrl+W
select whole word
Toggle Case
Ctrl+Shift+U
switch case
———————————————Edit——————————————————–
action
hot key
illustrate
Undo
Ctrl+Z
revoke
Redo
Ctrl+Shift+Z
redo
Cut
Ctrl+X
cut
Copy
Ctrl+C
copy
Paste
Ctrl+V
paste
Join Lines
Ctrl+Shift+J
Merge selected lines into one line
—————-Find—————–
action
hot key
illustrate
Find
Ctrl+F
Find in current file
Replace
Ctrl+R
replace string
Find in Path
Ctrl+Shift+F
Find string in global file
Replace in Path
Ctrl+Shift+R
replace string in global
Find Usages
Alt + F7
Find the use of the current variable and display it in a list
Show Usages
Ctrl + Alt + F7
Find the use of the current variable and display the dialog directly
Find Usages in File
Ctrl+F7
Find usage of symbols in files
Highlight Usages in File
Ctrl+Shift+F7
Highlight the use of variables in the file
The frequency of shortcut keys here is still very high, but the most used ones are Ctrl+F and Ctrl+Shift+F. The later related Find Usages are basically not used, and they should be used more later, sometimes relative to Ctrl +F finds by string in the file, it is better to use
—————————————–Navigate————————————————
action
hot key
illustrate
Class…
Ctrl+N
Find class files
File…
Ctrl+Shift+N
find files
Line…
Ctrl+G
Navigate to a line in the file
Back
Alt+Left Arrow
Return to the last cursor position
Forward
Alt+Right Arrow
Return to the previous cursor position
Last Edit Location
Ctrl+Shift+Backspace
Return to last edit position
Next Edit Location
Ctrl+Shift+Backslash
Return to the last edit position
Declaration
Ctrl+B
Navigate to the location where the variable is defined
Implementation(s)
Ctrl+Alt+B
Navigate to the concrete implementation of the selected class or method
Type Declaration
Ctrl+Shift+B
直接定位至光标所在变量的类型定义
Super Method
Ctrl+U
直接定位至当前方法override或者implements的方法定义处
File Structure
Ctrl+F12
显示当前文件的文件结构
File Path
Ctrl+Alt+F12
显示当前文件的路径，并可以方便的将相关父路径打开
Type Hierarchy
Ctrl+H
显示当前类的继承层次
Method Hierarchy
Ctrl+Shift+H
显示当前方法的继承层次
Call Hierarchy
Ctrl+Alt+H
显示当前方法的调用层次
Next Highlighted Error
F2
定位至下一个错误处
Previous Highlighted Error
Shift+F2
定位至前一个错误处
Previous Occurrence
Ctrl+Alt+向上箭头
查找前一个变量共现的地方
Next Occurrence
Ctrl+Alt+向下箭头
查找下一个变量共现的地方
目前还不知道Previous Occurrence 和 Next Occurrence是怎么用的，在变量上使用没有反应。不过在Edit–Find菜单下有几个菜单项：Find Next \/ Move to Next Occurrence、Find Previous \/ Move to Previous Occurrence等。当选中变量的时候，需要首先点击“Find Word at Caret”，然后再点击上述选项才有用