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

Question

The icon that IntelliJ (v11.1) usually shows next to Java classes is a blue circle with a C. But for one of my classes this icon has a small \"x\" in the top left corner. Th

Answer 1

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