In oder to improve performance when coding in Intellij IDEA, we need to know more about shortcut keys. So, in this article, we will learn something about it.
Let’s get started.
Table of contents
Operations with line
| Command |
Action |
| Alt + Enter |
Complete instruction of our code such as import class |
| Ctrl + Shift + Enter |
Insert any necessary trailing symbol and put ‘\n’ symbol to typing the next statement. |
| Ctrl + Alt + L |
Format code |
| Ctrl + Space |
Completes names of classes, methods, fields, and keywords within the visibility scope. |
| Ctrl + / |
Comment code |
| Ctrl + Shift + / |
Remove comment code |
| Ctrl + Shift + F7 |
Highlight all occurrences of the select fragment in the current file |
| Ctrl + Y |
Remove one or more lines |
| Alt + Shift + Up/Down |
Move lines up or down |
| Ctrl + D |
Duplicate lines in current file |
| Alt + Insert |
Insert basic code such as Constructor, getter/setter, override method, hash/toString() … |
| Alt + F7 |
To find all places where a particular class, method or variable is used in the whole project by positioning the caret at the symbol’s name or at its usage in code. |
| Ctrl + O |
Override method |
| Ctrl + I |
Implements method |
| Ctrl + Alt + T |
Surround with… (if..else, try..catch, for, synchronized, etc.) |
| Ctrl + Alt + O |
Optimize imports |
| Ctrl + Alt + I |
Auto-indent line(s) |
| Ctrl + Delete |
Delete to word end |
| Ctrl + Backspace |
Delete to word start |
| Ctrl + G |
Go to line |
| Ctrl + B/Ctrl + Click |
Go to declaration |
| Ctrl + Alt + B |
Go to implementation(s) |
| Ctrl + Shift + I |
Open quick definition lookup |
| Ctrl + Shift + B |
Go to type declaration |
| Ctrl + U |
Go to super-method/super-class |
| Alt + Arrow Up/Arrow Down |
Go to previous/next method |
| Ctrl + ]/[ |
Move to code block end / move to code start |
| Ctrl + Shift + Alt + Insert |
Create new scratch file |
| Ctrl + Alt + Left Arrow / Right Arrow |
Go back to the previous location; Go forward |
Search and Replace
| Command |
Action |
| Ctrl + Shift + A |
find action that is a command and execute it |
| Ctrl + N |
find classes in our project |
| Ctrl + Shift + N |
find files |
| Ctrl + Shift + Alt + N |
find symbols that are methods in classes |
| Ctrl + R |
open replace functionality |
| Alt + Shift + Mouse Click |
add/remove a selection |
| Alt + J |
Select the next occurrence |
| Shift + Alt + J |
Unselect the next occurrence |
| Shift + Ctrl + Alt + J |
Select all occurrences |
| Esc |
Remove all selections |
| Shift + Shift |
Search everywhere |
| Alt + F7 |
Search all places where something is used |
| Ctrl + B |
Go to the declaration of a symbol |
| Ctrl + Alt + B |
Go to the implementation of a symbol |
Operations with tabs
| Command |
Action |
| Alt + Left/Right arrow |
switches between tabs |
| Ctrl + F4 |
closes active tab |
| Ctrl + E |
Recent files popup |
| Ctrl + Tab |
Switch between tabs and tool window |
Compile and Run
| Command |
Action |
| Ctrl + F9 |
Make project (compile modifed and dependent) |
| Ctrl + Shift + F9 |
Compile selected file, package or module |
| Alt + Shift + F10 |
Select configuration and run |
| Alt + Shift + F9 |
Select configuration and debug |
| Shift + F10 |
Run |
| Shift + F9 |
Debug |
| Ctrl + Shift + F10 |
Run context configuration from editor |
Debug
| Command |
Action |
| F8 |
Step over |
| F7 |
Step into |
| Shift + F7 |
Smart step into |
| Shift + F8 |
Step out |
| Alt + F9 |
Run to cursor |
| Alt + F8 |
Evaluate expression |
| F9 |
Resume program |
| Ctrl + F8 |
Toggle breakpoint |
| Ctrl + Shift + F8 |
View breakpoints |
Some useful statements
| Short keys |
Statement |
Description |
| Ctrl + J |
|
Shows all shortcuts |
| sout |
System.out.println() |
Prints |
| soutm |
System.out.println(“$CLASS_NAME$.$METHOD_NAME$”); |
Prints current class and method names to System.out |
| soutp |
System.out.println($FORMAT$); |
Prints method parameter names and values to System.out |
| soutv |
System.out.println(“$EXPR_COPY$ = “ + $EXPR$); |
Prints a value to System.out |
| variable.sout |
System.out.println(variable); |
variable exists in our scope |
| Shift + Ctrl + Enter |
|
Add semicolon to the end of the code; add curly braces to for, if statements, then place cursor inside the block |
Creating something
| Command |
Action |
| Alt + F + J |
Close project |
| Alt + 1 |
Go to Project View |
| Alt + Insert |
Create file in the Project View |
| Ctrl + Alt + Insert |
Create a new file in the same directory as the current one |
Wrapping up
- Take advantages of the shortcut key in Intellij makes us coding smoothly.
Thanks for your reading.
Refer:
https://www.jetbrains.com/help/idea/mastering-keyboard-shortcuts.html
https://shortcutworld.com/IntelliJ-IDEA/win/IntelliJ_Shortcuts