Java 8 Lambda: Comparator

Question

I want to sort a list with Lambda:

List messagesByDeviceType = new ArrayList();      
messagesByDeviceType.sort((Message o1, Messag         


        

Answer 1

Comparator#compareTo returns an int; while getTime is obviously long.

It would be nicer written like this:

 .sort(Comparator.comparingLong(Message::getTime))