Most answers here are answering your question literally, and explaining why you'd add a type for "seconds". But in reality you shouldn't create a type for secon

Most answers here are answering your question literally, and explaining why you'd add a type for "seconds". But in reality you shouldn't create a type for seconds, the whole premise of the question is wrong. Instead of a type for seconds, you'd want a type for all kinds of duration regardless of the time unit, and with easy conversion to integers of a specific time unit. So your foo() function would be taking a Duration as an input rather than seconds, and work correctly no matter what unit you created that duration from: foo(Duration.seconds(3600)) foo(Duration.hours(1)) foo(Duration.hours(1) + Duration.seconds(5))