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intellj idea interface override 报错

1,File -> Project Structure -> Project -> Project Language level 调到5以后

2,Modules -> Sources -> Language Level 调整到5以后

3,File -> Settings -> Build, Execution ... -> Complier -> Java Compiler -> PROJECT -> TARGET BYTECODE VERSION。

 

通过以上三步基本解决问题了。

intellj idea interface override 报错