Using the idea shortcut key, you can know your technical level?

Today I want to share something about Idea Shortcut keys , These are commonly used functions , Come and see if you can do it ？

If not , After reading the article, remember to master it quickly ~（ More basic content ）

 01. Show context operations （Alt  Enter）

in many instances ,IntelliJ IDEA You can guess your intention or provide you with warning or error correction keys to invoke one of the most useful operations .

 02. Search operations  

1️⃣ Search operation （Ctrl Shift A）

This is one of the most useful shortcuts , Through it, you can search all available operations , Without knowing the shortcuts .

2️⃣ search everywhere （ Press two Shift）

You can press twice Shift To call search everywhere , Search everywhere by using , You can find both project code entities and others IDE object . How to use it is up to you .

 03. Basically complete （Ctrl Space ）

To activate basic completion , Please press Ctrl Space , We will see the search menu , Press Enter Key to select Random class ;

Go through the above steps , The cursor falls on Random Brackets ;

How to complete this sentence , We can use Ctrl Shift Enter Complete semicolon , The cursor naturally reaches the end of the line ;

As for the above shortcut, it is used every day Idea For programming apes , It's really too superficial , But it is very basic , Also very common .

Believe in 100% All apes can successfully pass the program , Next, our difficulty will be increased , See if you have everything ？

 04. Expand and narrow code selection （Ctrl W）

Press Ctrl W You can select the word at the text cursor ;

Press again Ctrl W You can select the entire string ;

Press for the third time Ctrl W You can add quotation marks to the selection ;

Press again Ctrl W You can select the entire row twice ;

And sometimes , We just want to select a complete row of data , So how to narrow the selection area ？Ctrl Shift W

Of course, you can also position the cursor to if front , Press Ctrl W To select the entire code block .

 05. Moving code snippets （Alt Shift /）

Rearranging rows usually involves two operations ： Cut and paste . While using IntelliJ IDEA, Just do one thing .

Move current row down （Alt Shift ）

Move the current line up （Alt Shift ）

 06. Retract （Ctrl minus sign ）

Sometimes you need to put away a piece of code to improve readability , For example, the following classes ：

Try to use  Ctrl minus sign   Retract test1 Code segment .

If you want to collapse all the region code snippets in the class , have access to  Ctrl Shift minus sign

Again , Press Ctrl Equal sign You can expand a single available area .Ctrl Shift Equal sign You can expand all available areas .

 07. Surround and unravel  

1️⃣ around （Ctrl Alt T）

Wrap some template code around the selected code segment ：

choice try/catch/finally

2️⃣ Untie

Untie try entry , adopt Ctrl Shift Delete Return to the original state .

 08. multi-select  

In a class , There may be many variables with the same name , How to quickly modify variable names , We need to learn to use   multi-select   Shortcut key .

Position the cursor at the position shown below , Press  Alt J, Select the variable .

Press again Alt J You can select the next match and deselect the previous match Alt Shift J.

Deselect the previous match  Alt Shift J.

Select all matches in the class  Ctrl Alt Shift J.

take param The variable name is uniformly modified to  parameter.

thus , Let's talk about some commonly used Idea The shortcut keys are introduced , Do you know all these ？

If you can only （1） and （2） Two shortcuts , Then you will be a primary Java Development Engineer ;

If you come out （1）、（2） outside , Also often use （3）、（4）, Then you are a intermediate Java Development Engineer ;

If you know all the shortcuts , So congratulations , You are a person who loves life , Be very careful about your work , Sense of responsibility 、 Curious senior Java Development Engineer .

therefore , Dear programmers , These shortcut keys above , Do you use it everyday ？ Welcome to comment in the message area ~