Error:java: Compilation failed: internal java comp

解决方式：

step1

File->Project Structure -> project 菜单下，project SDK更改成1.8，而后project language level 更改成sdk default

这时候须要检查一下File->Project Structure -> Modules下模块的language level是否更改，未更改的话，点击下拉菜单更改一下

step2

File-setting->Bulid,Excution,Deployment->compiler->java Compiler中把相应的模块更改成jdk8

以上两步便可！