static - Java Utility Class vs. Service

Question

(Closed). This question is opinion-based. It is not currently accepting answers. question from:https://stackoverflow.com/questions/871434/java-utility-class-vs-service

Answer 1

Different behaviors can be obtained by using different service objects. Static methods in a utility class can't be swapped out. This is extremely useful for testing, changing implementations, and other purposes.

For example, you mention a CryptoUtil with an encrypt method. It would extremely useful to have different objects that could support different encryption strategies, different message recipients, etc.