Why is Intellij showing a cross (x) over the class icon for one of my Java classes?

java intellij-idea

This icon shows that the class is excluded from the compilation, it can be changed in Settings (Preferences on Mac) | Compiler | Excludes.

Related

How do I find the value of $CATALINA_HOME?
How to create a blank transparent png in Objective-C?
How to perform arithmetic operation on a date in Python?
How to set filename containing spaces in Content-Disposition header
Python Mock Multiple Calls with Different Results
Can I use `else if` over `elsif`?
The new null-conditional operator in ASP.NET MVC Razor
find where in the code an http request was made using chrome dev tools
Difference in output with waitKey(0) and waitKey(1)
Backpressure mechanism in Spring Web-Flux
Why does IE make password boxes smaller than text boxes?
How to access data when form.is_valid() is false