Detailed explanation of IntelliJ IDEA2022 (introduction-download-installation-uninstallation-activation-plugin-global setting JDK-global setting Maven-de-Chineseization-shortcut key)

How can you never tire of the old when you like the new, how can you not think of moving when you see differences

1. Software introduction:

IDEA stands for IntelliJ IDEA, which is an integrated development environment for the java programming language. What IDEA advocates is intelligent coding, which is to reduce the work of programmers, so it is also recognized as one of the best Java development tools in the industry (Eclipse can't help but prepare to speak).
Reasons for choosing IDEA:
1. The historical trend is flowing from Eclipse to IntelliJ IDEA, and the balance has gradually tilted towards IDEA;
2. Powerful prompts, repairs and completion functions;
3. Smart to jaw-dropping refactoring functions;
4. Good Use the explosive search and open function;

2. Software download:

Basic requirements for environment configuration:

IDEA official website: https://www.jetbrains.com/idea/
1. Enter the official website and click Developer Tools (just follow the red arrow once)

3. Software installation:

After completing the second step, we have downloaded the application program, and then click .exe to perform the following operations.




Wait patiently for a while,...


the installation is successful, the interface is as follows:

4. Software uninstallation:

There are many ways to uninstall, here are two examples:
①For example, both 360 Security Assistant and Tencent Computer Manager support this function;
②Uninstall in Control Panel-All Control Panel Items-Programs and Features;

5. Software activation:

There are three ways to activate in the 2022 version, corresponding to the following: ①account login; ②activation code; ③registration number

Six, install the plug-in

Open IDEA, click file-setting-pluging in turn, and download the plug-in in this interface, but it can only be done in a networked state.

7. IDEA initializes global settings JDK

[Before building the project]
JDK configuration: configure->Structure for New Projects

[After building the project] In
the first step, click File-Project Structure

. In the second step, set the SDKs in the "Project Structure-Platform settings-SDKs" interface.

The third step is to set the SDK in the "Project Structure-Project Settings-projecr" interface.

8. IDEA initializes the global settings Maven

Maven配置：configure->Setting->Build,Execution,Deployment->Build Tools->Maven

9. How to change IDEA from Chinese to English

(Chinese version)

(Chinese to English version)
Open IDEA, click File-Settings-Plugins in the upper left corner, search for Chinese, remove the √ of this plugin and restart it.

10. Commonly used shortcut keys

Alt + Enter: Automatic package import
Ctrl + Shift + N: Fuzzy matching to find files
Ctrl + / or Ctrl + Shift + / : Single-line comment or multi-line comment
Ctrl + B: Quickly open the class or method at the cursor
Tab key or Shift + Tab key: indent/unindent the selected code block
sout + Tab key: quickly create an output statement
Alt + Insert: set/get; construction method; toString; rewrite method (note: if F12 and Insert are in the same key, then Fn+Alt+Insert is only valid)