Why can't I get a duration in minutes or hours in java.time?

Question

Of the Duration class in the new JSR 310 date API (java.time package) available in Java 8 and later, the javadoc says :

This class models a quantity o

Answer 1

The documentation says:

This returns a value for each of the two supported units, SECONDS and NANOS. All other units throw an exception.

So, best guess answer -- that's the way they designed it.

You can use some of the other methods to get it in hours:

long hours = duration.toHours();

or minutes:

long minutes = duration.toMinutes();