Java final abstract class

Question

I have a quite simple question:

I want to have a Java Class, which provides one public static method, which does something. This is just for encapsulating purposes (to h

Answer 1

You can't get much simpler than using an enum with no instances.

public enum MyLib {;

   public static void myHelperMethod() { }
}

This class is final, with explicitly no instances and a private constructor.

This is detected by the compiler rather than as a runtime error. (unlike throwing an exception)