IntelliJ IDEA 安装与激活
idea 全称是 IntelliJ IDEA，用于 java开发的集成环境，是公认最好的java开发工具之一，由于本人的需求安装了idea，截止于今天已使用3个月，如果是用惯eclipse的话，可能刚开始会有一些不习惯，比如快捷方式不一样等，但是idea也很多比较好多地方，这个待你安装之后自己慢慢去发现吧，现将其分享给大家，向业界诸神看齐，愿与大家共进步。
关于 IntelliJ IDEA 安装
下载地址：https://www.jetbrains.com/idea/download/#section=windows
下载完安装包之后点击安装即可，建议安装到非系统盘，一般是盘符是C盘。
关于 IntelliJ IDEA 激活
idea给我们提供了三种激活方式，下面详细介绍第二种方式，通过 Activation code（推荐），即使用lanyu大神的注册码
步骤如下：
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修改host文件；目录：C:\Windows\System32\drivers\etc
去掉前面的#号注释，如果没有该行请自行在最后添加一行：0.0.0.0 account.jetbrains.com
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获取注册码，地址：http://idea.lanyus.com/
下面是我临时获取的一个注册码，可以自行更换：
K71U8DBPNE-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-Owt3/+LdCpedvF0eQ8635yYt0+ZLtCfIHOKzSrx5hBtbKGYRPFDrdgQAK6lJjexl2emLBcUq729K1+ukY9Js0nx1NH09l9Rw4c7k9wUksLl6RWx7Hcdcma1AHolfSp79NynSMZzQQLFohNyjD+dXfXM5GYd2OTHya0zYjTNMmAJuuRsapJMP9F1z7UTpMpLMxS/JaCWdyX6qIs+funJdPF7bjzYAQBvtbz+6SANBgN36gG1B2xHhccTn6WE8vagwwSNuM70egpahcTktoHxI7uS1JGN9gKAr6nbp+8DbFz3a2wd+XoF3nSJb/d2f/6zJR8yJF8AOyb30kwg3zf5cWw==-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 -
打开idea，选择输入注册码按钮，然后复制刚获取的注册码，最后确定即可【打开idea前建议先断网】
作者：ce_wangyp
来源链接：https://blog.csdn.net/qq_36735986/article/details/84851964
