Sort One of the most common needs with collections is sorting. Java has long had a built-in Arrays.sort method, and Collections.sort allows for sorting by natural order or using a custom comparator.

Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions.

The Java Platform provides the most commonly used data structures in the form of the Collections Framework, and it provides a rich API to operate on them. This article explains the concepts behind ...