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. Programmers frequently need to ...

We start with how sorting algorithms work. Although you don’t need to implement sorting algorithms yourself, it’s useful to know how they work internally. You can skip to the next section if you just ...

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. In this first article in a two-part series, I ...

The Comparable interface is simple because it only has one method; however, implementing the compareTo method can become tedious if you need to sort your object by multiple properties (especially if ...