Select the project, then File > ProjectStructure > ProjectSettings > Modules -> sources You probably have the Language Level set at 9:
Just change it to 8
借用下别人的图片, 我的默认是11报的错, 改成8后就好了
Select the project, then File > ProjectStructure > ProjectSettings > Modules -> sources You probably have the Language Level set at 9:
Just change it to 8
借用下别人的图片, 我的默认是11报的错, 改成8后就好了
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