Usage of API documented as @since 1.7+ less... (Ctrl+F1) This inspection finds all usages of methods that have @since tag in their documentation. This may be useful when development is perf

Usage of API documented as @since 1.7+ less... (Ctrl+F1)
This inspection finds all usages of methods that have @since tag in their documentation. This may be useful when development is performed under newer SDK version as the target platform for production.

Usage of API documented as @since 1.7+
This inspection finds all usages of methods that have @since tag in their documentation. This may be useful when development is performed under newer SDK version as the target platform for production.

File ->Project Structure->Project Settings -> Modules -> （需要修改的工程名称） -> Sources -> Language Level->选7以上的版本就好了