java.lang.NoSuchMethodError: No interface method sort(Ljava/util/Comparator;) exception in sorting arraylist android

Question

I\'m trying to sort an ArrayList in Java in Android app but I\'m getting this weird exception.

Code:

eventsList.sort(new Comparator<         


        

Answer 1

List doesn't have its own sorting method, you'll need to call

Collections.sort() 

as the method on the list. If this returns a ClassCastError, that means the list has non-sortable items. I think this should fix it, but without full code, it's hard to check.