java: Compilation failed: internal java compiler error
1、查看项目的jdk（Ctrl+Alt+shift+S）
File ->Project Structure->Project Settings ->Project
2、查看工程的jdk（Ctrl+Alt+shift+S）
File ->Project Structure->Project Settings -> Modules -> （需要修改的工程名称） -> Sources ->
3、查看idea中Java配置
File ->Setting ->Build,Execution,Deployment -> Compiler -> Java Compiler
4. 清除IDEA缓存，重启IDEA
File -> Invalidate Caches/Restart
5. Reload All Maven Projects
REF
https://blog.csdn.net/ruoxiyun/article/details/88256928