最简单IntelliJ IDEA安装教程（小白也能一次性安装完成）

在这里插入图片描述

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0. 前言

工欲善其事必先利其器，作为一名Java开发者，手上必须得有趁手的工具。市面上的Java开发IDE有：Eclipse、NetBeans、Lightly、IntelliJ IDEA、JDeveloper 。

作者推荐使用IntelliJ IDEA，为什么推荐它呢？

提供了强大的代码编辑功能，包括代码补全、语法高亮、代码重构等。
有丰富的插件支持，可以满足各种项目的需求。
支持自动化构建、测试和部署，可以提高开发效率。
提供了强大的调试工具，可以快速定位和解决问题。
支持多版本控制系统，如Git、SVN等
可以与其他开发工具（如Maven、Gradle等）无缝集成，方便开发者进行项目管理。

PS:安装IDEA之前需要安装JDK，JDK安装教程

1. 下载IntelliJ IDEA

IntelliJ IDEA支持Windows、macOS、Linux，根据自己的操作系统下载即可。

如果不想下载最新版本的IntelliJ IDEA，也可以下载其他版本。

这里作者就用2022.3.3版本做演示：

点击下载：

2. 安装IntelliJ IDEA

下载后双击安装包

单击next

C:\APP\Java\IntelliJ IDEA

【注意】:路径中尽量不要有中文、空格。

然后一直next即可，完成安装。

3. 激活IntelliJ IDEA

输入激活码

激活码如下：选择对应版本即可。

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4. 新建项目

设置项目名、项目存放地址以及JDK版本（由于作者电脑安装了JDK1.8和JDK17所以这里就有两个JDK版本）

运行程序：右键——Run

5. 基础设置

5.1 设置字体大小

file->Settings->Editor->Font

个人建议把字体大小设置为18，显示器最好能看30行代码。

5.2 鼠标滚轮调整字体大小

file->Settings->Editor->Change font size with Ctrl + Mouse Wheel in，勾选Change font size with Ctrl + Mouse Wheel in选项即可。

5.3 忽略文件

file->Settings->Editor->file Tyes ->lgnores and Folders

*.dea*iml.idea.iml

5.4 方法分割线

file->Settings->Editor->General->Appearnce->show method separstors

5.5 询问文件

6. 常用快捷键

快捷键组合	实现效果
psvm + Tab键 / main + Tab键	public static void main(String[] args)
sout + Tab键	System.out.println()
Ctrl + X	删除当前行
Ctrl +D	复制当前行
Alt+Insert(或右键Generate)	生成代码(如get,set方法,构造函数等)
Ctrl+Alt+T	生成try catch （或者 Alt+enter选择）
CTRL+ALT+T	把选中的代码放在 TRY{} IF{} ELSE{} 里
Ctr+shift+U	实现大小写之间的转化
ALT+回车	导入包,自动修正
CTRL+ALT+L	格式化代码
CTRL+ALT+I	自动缩进
CTRL+E	最近更改的代码
fori	生成for (int i = 0; i < ; i++) {}
Alt + <–左右–>键	实现窗口左右更换（多窗口）
Ctrl + 鼠标点击	快速找到成员变量的出处
Shift+F6	重构/重命名 (包、类、方法、变量、甚至注释等)
CTRL+Q	查看当前方法的声明
Ctrl+Alt+V	自动创建变量（new 对象();之后选择按快捷键）
Ctrl+O	重写方法
Ctrl+I	实现方法
ALT+/	代码提示
Ctrl+Shift+R	在当前项目中替换指定内容
Ctrl+E	最近编辑的文件列表
Ctrl+P	显示方法参数信息
Ctrl+Shift+Insert	查看历史复制记录，idea可以保留历史复制的 100 条记录

7. 插件

CodeGlance

CodeGlance是一款代码编辑区缩略图插件，可以快速定位代码，使用起来比拖动滚动条方便多了
彩虹颜色括号：Rainbow Brackets
阿里代码规约检测：Alibaba Java Coding Guidelines
汉化插件：chinese（个人建议尽量不要汉化）

最后建议，插件宜少不宜多，选择最适合最需要使用的就行，不必贪多，否则可能会适得其反，IDEA会变得臃肿卡顿，反而影响开发效率。

8. IDEA 调试工具

虫子

快捷键	操作
F8	单步调试（不进入函数内部）
F7	单步调试（进入函数内部）
shift + F7	选择要进入的函数
shift + F8	跳出函数
alt + F9	运行到断点
alt + F8	执行表达式查看结果
F9	继续执行，进入下一个断点或执行完程序