Does Arraylist Implements Comparable?

The Collections. sort() method sorts ArrayList elements or elements of any other List implementation provided the elements are comparable. What this means programmatically is that the classes of the elements need to implement the Comparable interface of the java. lang package.

Does List implement comparable?

Comparable interface is mainly used to sort the arrays (or lists) of custom objects. Lists (and arrays) of objects that implement Comparable interface can be sorted automatically by Collections. sort (and Arrays. sort).

What implements the Comparable interface?

Since the Member class implements the Comparable interface, it is possible to sort the list by using the sorted method.