idea激活码（资源是从官网购买，仅供学习和交流） 激活之前先设置一下代理第一步：选择代理设置第二步：选择 Manual proxy configuration第三步：输入配置，第三步不要漏下面为复制红框内容，直接复制进去就好！！！Host Name：localhost No proxy for: *.github.com,plugins.jetbrains.com第四步：输入激活码SFXUSA86FM-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-JDVXZeZnNxn5sMQEXZ2TOZlrMOVI37CPE25JugHcDUdJPc75u4D+IEwoFl1GRB8GKrIhSwJa6OhgHpyXyMqLXtroe/p+qWo6kLi86iTuXpK+E4UQPQP9X9cZTxgupD4py7/Pps4qeuwiWIsbESoDDxRsuivhh1xka8lfJHoPDMwdV7DNjRFUUFpJrDr7KYp5zGRFU9hIUfh8YzZ0lQTAzboQyUwMoTRRiUOM5hs/2/RG6VA1gPaeqRaE6v0nphHTZ6By3Zvs5tj9qh6iW07jtXTxXk0MDzNrQpMh2MUvPB0dikKjDMxgUKFGEiDKvFilZJ+y0ErfdFekBn+mfInr0Q==-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

荐一个好用的IDEA插件---Translation—中英互译 在使用IDEA时，我们经常会看一些写源代码，当我们点进去源码后发现注释信息全都是英文，如以下为HashMap的源码，可以发现大段的英文注释，若英文不好的看到估计会很懵，理解起来也很费劲。阅读源码对于英语不好的同学来说难以理解，大大减弱了我们读源码的效率，而复制源码再粘贴到翻译软件上进行查询时，会将前面的星号也复制进去，导致翻译效果很不理想，非常的麻烦。这时候这款插件Translation就可以很好的解决我们这个问题。插件介绍：Translation——用于IDEA内部英汉互译的插件插件下载地址：Translation - IntelliJ IDEs Plugin | Marketplace插件快捷键命令：（1）ctrl+shift+o ----> 打开内嵌的中英文翻译器 （2）ctrl+shift+y ----> 翻译选中的英文 / 中文 / 其他语言 （3）ctrl+shift+x ----> 翻译选中的英文（中文）并提示对应转换后的中文（英文） 这个插件主要可以用于以下场景：按下ctrl+shift+y，对选中的英文注释信息进行翻译，并自动去除选中的除英文之外的特殊字符，使得英文翻译更加的准确，大大提高了英文翻译准确性和源码阅读效率。有些时候可能要求书写英文注释，这时候可以直接在注释内写中文，然后利用该插件键入快捷键ctrl+shift+y直接转为中文，实现写中文注释一键转为英文注释。在开发过程中我们常常会因为起各种名而烦恼，比如某个方法名、类名、变量名、接口名，这时候直接在名称处输入中文，再使用插件 ctrl+shift+x 就能一键将中文变量名或类名生成对应的变量名，而且类似于IDEA的提示功能，可以有很多选择，不用担心变量名重复的问题

[上]JAVA学习系列模块三第一章56.idea_安装过程说明 [上]JAVA学习系列模块三第一章56.idea_安装过程说明视频{bilibili bvid="BV1YT4y1H7YM" /}笔记{cloud title="IDEA下载（访问码：8cve）" type="default" url="https://cloud.189.cn/web/share?code=QryYB32Uj673" password=""/}

IDEA报错：java:无效的源发行版21 出现的问题：[blockquote2 name='洛维花']IDEA报错：java:无效的源发行版21[/tip]产生的原因：JDK的版本问题解决方案： - （一）检查本地JDK与项目中的JDK版本是否一致，检查方法如下： （1）win+R打开cmd窗口，输入java -version查看当前本地的JDK版本。  （2）查看项目JDK版本：File > Project Structure > Project。   修改完成后点击应用（apply），大功告成！