Why use singleton instead of static class?

Question

When would a singleton actually be easier or better than a static class? It seems to me creating a singleton is just extra effort that\'s not actually needed, but I\'m sure

Answer 1

Singletons preserve the conventional class approach, and don't require that you use the static keyword everywhere. They may be more demanding to implement at first, but will greatly simplify the architecture of your program. Unlike static classes, we can use singletons as parameters or objects.

Also,you can use singletons with interfaces just like any other class.