一、IDEA2021激活码绝对有效
下面这个 IDEA 激活码失效了的话，请关注微信公众号：Java团长，然后发送“ 激活码 ”即可获取最新免费有效的 idea 的激活码。
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二、他们的激活码不用试了都是无效的！
1. Oracle正式下载jdk11并将其放入备用目录；
2. 已安装idea搜索插件choose runtime。如果是一个相对较新的想法，安装后不需要重新启动；
3. 依次输入“帮助->查找操作”，在“操作”搜索框中输入“选择运行时”，并选中；
4. 在“选择运行时”弹出框中，选择OracleJDK并确认。
5. 这个想法将自动重新启动。重新启动后，您会发现idea使用了Oracle JDK。
我只是试了一下，发现真的没有这样的卡片。我希望几天后一切都会顺利。