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This article "how to use IDEA" is not quite understood by most people except programmers. Today, in order to make you better understand "how to use IDEA", the editor summed up the following content, which has a certain reference value, the detailed steps are clear, and the details are handled properly. I hope you can get something through this article. Let's take a look at the specific content.

Use and summary of IDEA

1. Download IDEA and common software

II. Installation and configuration of IDEA

Installation: (IDEA version is IntelliJ IDEA 2018.3.6 x64)

Click to install the package all the way by default, and you can take the next step.

Configuration: set up idea64.exe.vmoptions (the file is in the bin file in the installation directory, the number of digits of the installation system is selected to modify the file, my computer is 64-bit)

The purpose of configuring this file is to make the software run more smoothly and fully reflect the performance of the computer. In addition to configuring this software, you can also remove some plug-ins that you do not need and make the software more fluent.

-Xms500m

-Xmx1500m

-XX:ReservedCodeCacheSize=500m

-XX:SoftRefLRUPolicyMSPerMB=100

Configuration diagram

Configure the local maven:

Click setting = > search maven (or click Build,Execution,Deployment to find Build Tools== > maven) = > maven home directory, select maven3,User settings file tick, and select the settings.xml address of the local maven (under the premise of configuring this file, Local repository will automatically find the location directory of the file configuration) the relevant configuration below

Configuration diagram

III. Installation and use of common plug-ins for IDEA

Alibaba Java Coding Cuidelines: Alibaba java Development Protocol

Activate-power-mode: effect plug-in bubbling effect

Free MyBatis plugin: fast access between DAO interface and XML file

Iedis: plug-in for redis

Lombok: development tools plug-in

Zookeeper

3.1. Maven configuration Ali image (the compressed package I downloaded is decompressed to disk D, and the setting.xml configuration in maven3.6)

Here are some of the main configurations of maven, including the specification of the jdk version and the modification of the location of the default maven local jar package, and the configuration of Ali central repository

D:\ apache-maven-3.6.1\ lib

Alimaven

Aliyun maven

Http://maven.aliyun.com/nexus/content/groups/public/

Central

Jdk-1.8

True

1.8

1.8

1.8

1.8

3.2. Plug-in usage, plug-in usage that needs to be recorded:

Lombok

@ Getter, @ Setter generate our get set method

@ RequiredArgsConstructor generates a constructor with the annotated variable @ NonNull

@ ToString converts our object to a string with a member variable worth a string

@ EqualsAndHashCode helps us rewrite the equals and hashCode methods to compare objects

@ Data {@ Getter, @ Setter, @ RequiredArgsConstructor, @ ToString, @ EqualsAndHashCode}

IV. Common functions and shortcuts of IDEA

Ctrl + F search

Ctrl + R substitution

Ctrl + Z undo

Ctrl + Y deletes the line where the cursor is located

Ctrl + X cut the line of the cursor

Ctrl + C copy the line of the cursor

Ctrl + V paste the line of the cursor

Ctrl + D copies the cursor line to the next line

Ctrl + W Progressive selection Code Block

Ctrl + E opens a history file that we modified

Ctrl + N looks for files based on class names

Ctrl + J list Live Temples

Input parameters of Ctrl + P display method

Ctrl + U enters the parent class of the class where the cursor is located

Ctrl + B jumps to the declaration of the method / variable where the cursor is located-Ctrl + left mouse button click method name / variable name

Ctrl + / comment cursor line or selected line use release comment Ctrl + Shift + / generate block-level comments again

Ctrl + F1 displays the error message of the error line where the cursor is located

Ctrl + F3 jumps to the next position where the selected word appears

Ctrl + Table jumps in the open file

Ctrl + keyboard around key jump at the beginning and end of the word

The up and down keys of the Ctrl + keyboard slide up and down the editing area

Alt + Enter proposes to modify the error code at the cursor.

Alt + Insert quickly generate some commonly used code

Shift + Table Unindent

A line under the Shift + Enter cursor vacates a line above the line where the Ctrl + Alt + Enter cursor is located.

Left and right sliding of the Shift + mouse wheel editing area

Ctrl + Alt + L pair formatting code

Ctrl + Alt + left-click on the keyboard to return to the last modified place

Ctrl + Alt + Keyboard right-click back the last modified place

Ctrl + Shift + Z cancel undo

Ctrl + Shift + C copy the current file disk path

Ctrl + Shift + keyboard + key to expand the code block

Ctrl + Shift + Keyboard-key to collapse the code block

Ctrl + Shift + Enter automatically ends the current line and adds

Thank you for your reading, I hope you have a certain understanding of the key issue of "how to use IDEA", the specific use of the need to do your own experiments to understand, quickly try it, if you want to read more related knowledge articles, welcome to follow the industry information channel!

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