What's the best way to define an independent method to be reusable by two non-related classes?

Question

I've two classes that need to use the same method and I believe inheritance is overkill since this is the only thing in common: there are no relations and the operation is very specific. The method to be reused just take two parameters and calculate an operation with them.

Answer 1

It sounds like a utility method. So, I think a separate class containing that method as a static method would do the trick

Answer 2

Composition is a possible solution here. The 2 classes could be passed on one instance of a 'helper' class with your operation.

Answer 3

通常，我会为这种事情创建一个实用程序类-最有可能使用静态方法。

Answer 4

如果该方法不使用任何实例字段：将其设为静态并将其移至某些实用程序类中。