最简单IntelliJ IDEA安装教程（小白也能一次性安装完成）

📚博客主页：爱敲代码的小杨.

✨专栏：《Java SE语法》

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文章目录

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？

1. 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。
2. 有丰富的插件支持，可以满足各种项目的需求。
3. 支持自动化构建、测试和部署，可以提高开发效率。
4. 提供了强大的调试工具，可以快速定位和解决问题。
5. 支持多版本控制系统，如Git、SVN等
6. 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

官网地址

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

选择安装路径，作者这里选择

C:\APP\Java\IntelliJ IDEA

路径

【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。

• 2018.2及以后版本：2018、2019、2020、2021、2022、2023均可使用！MXMQUYT815-eyJsaWNlbnNlSWQiOiJNWE1RVVlUODE1IiwibGljZW5zZWVOYW1lIjoiSHVuYW4gSW5zdGl0dXRlIG9mIFNjaWVuY2UgYW5kIFRlY2hub2xvZ3kiLCJhc3NpZ25lZU5hbWUiOiJqaWtlIGNvZGUiLCJhc3NpZ25lZUVtYWlsIjoiamV0YnJhaW5zMjMwMjA2QG91dGxvb2suY29tIiwibGljZW5zZVJlc3RyaWN0aW9uIjoiRm9yIGVkdWNhdGlvbmFsIHVzZSBvbmx5IiwiY2hlY2tDb25jdXJyZW50VXNlIjpmYWxzZSwicHJvZHVjdHMiOlt7ImNvZGUiOiJEUE4iLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6ZmFsc2V9LHsiY29kZSI6IkRCIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOmZhbHNlfSx7ImNvZGUiOiJQUyIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjpmYWxzZX0seyJjb2RlIjoiSUkiLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6ZmFsc2V9LHsiY29kZSI6IlJTQyIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjp0cnVlfSx7ImNvZGUiOiJHTyIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjpmYWxzZX0seyJjb2RlIjoiRE0iLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6ZmFsc2V9LHsiY29kZSI6IlJTRiIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjp0cnVlfSx7ImNvZGUiOiJEUyIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjpmYWxzZX0seyJjb2RlIjoiUEMiLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6ZmFsc2V9LHsiY29kZSI6IlJDIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOmZhbHNlfSx7ImNvZGUiOiJDTCIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjpmYWxzZX0seyJjb2RlIjoiV1MiLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6ZmFsc2V9LHsiY29kZSI6IlJEIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOmZhbHNlfSx7ImNvZGUiOiJSUzAiLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6ZmFsc2V9LHsiY29kZSI6IlJNIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOmZhbHNlfSx7ImNvZGUiOiJBQyIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjpmYWxzZX0seyJjb2RlIjoiUlNWIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOnRydWV9LHsiY29kZSI6IkRDIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOmZhbHNlfSx7ImNvZGUiOiJSU1UiLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6ZmFsc2V9LHsiY29kZSI6IkRQIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOnRydWV9LHsiY29kZSI6IlBEQiIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjp0cnVlfSx7ImNvZGUiOiJQV1MiLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6dHJ1ZX0seyJjb2RlIjoiUFNJIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOnRydWV9LHsiY29kZSI6IlBQUyIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjp0cnVlfSx7ImNvZGUiOiJQQ1dNUCIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjp0cnVlfSx7ImNvZGUiOiJQR08iLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6dHJ1ZX0seyJjb2RlIjoiUFBDIiwicGFpZFVwVG8iOiIyMDI0LTAyLTA5IiwiZXh0ZW5kZWQiOnRydWV9LHsiY29kZSI6IlBSQiIsInBhaWRVcFRvIjoiMjAyNC0wMi0wOSIsImV4dGVuZGVkIjp0cnVlfSx7ImNvZGUiOiJQU1ciLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6dHJ1ZX0seyJjb2RlIjoiUlMiLCJwYWlkVXBUbyI6IjIwMjQtMDItMDkiLCJleHRlbmRlZCI6dHJ1ZX1dLCJtZXRhZGF0YSI6IjAxMjAyMzAyMDZMUEFBMDA4MDA5IiwiaGFzaCI6IjQyNTQ5NjcyLzIwMDk1Nzk5Oi03OTk2MzgyNTgiLCJncmFjZVBlcmlvZERheXMiOjcsImF1dG9Qcm9sb25nYXRlZCI6ZmFsc2UsImlzQXV0b1Byb2xvbmdhdGVkIjpmYWxzZX0=-OXfbtL5lwz9bDhPZ0POhH6h8h1ubDm0bzkRWX33IjJlRmK4BkGzO65BWjIJ+ndT0stY8uOUWo4FM1Aej+YGXMTlyD3rcCBkcFN6dB6FEVelLYoBevxN9myhp0IGvfHaLQ6hoVxAKr0AkSAlSsgKVN6gOYw7Nn8lR/ivpuXXteZWiG4x7KCxHM/6/oPXAbQQmD1sy2q05s1tsvxBltZbsFJ3/Yv6lG89h0YlN9FvFciqUM6B1Cc5Fo7a6oUOfpyCJKPSwzyzkxLOhlL4QO6/LfQ3zNO9wirnz506mZXh3oB+wS1gDFLk7RehEQMqdqnjh+zaNKi1QKB/cyK1Op0oDTQ==-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
• 2018.1及以前版本：2016、2017均可使用！MXMQUYT815-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-OXfbtL5lwz9bDhPZ0POhH6h8h1ubDm0bzkRWX33IjJlRmK4BkGzO65BWjIJ+ndT0stY8uOUWo4FM1Aej+YGXMTlyD3rcCBkcFN6dB6FEVelLYoBevxN9myhp0IGvfHaLQ6hoVxAKr0AkSAlSsgKVN6gOYw7Nn8lR/ivpuXXteZWiG4x7KCxHM/6/oPXAbQQmD1sy2q05s1tsvxBltZbsFJ3/Yv6lG89h0YlN9FvFciqUM6B1Cc5Fo7a6oUOfpyCJKPSwzyzkxLOhlL4QO6/LfQ3zNO9wirnz506mZXh3oB+wS1gDFLk7RehEQMqdqnjh+zaNKi1QKB/cyK1Op0oDTQ==-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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

这里作者添加了

*.dea

和

*iml

忽略

.idea

文件夹和以后缀为

.iml

的文件

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

1. CodeGlanceCodeGlance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
2. 彩虹颜色括号：Rainbow Brackets
3. 阿里代码规约检测：Alibaba Java Coding Guidelines
4. 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

IDEA 调试方式：首先需要设置断点，然后单击

虫子

按钮进入 DeBug模式。

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