Learn how to add animated movement into your program where multiple objects chase a lead object as it moves randomly in a given environment.

Learn how to secure a web service using WS-Security. WS-Security is a specification from OASIS (Organization for the Advancement of Structured Information Standards) that describes enhancements to SOAP messaging to provide message integrity and confidentiality.

Learn how to write a Java program to apply a blurring or softening filter to your digital photos. The amount of softening is controlled by the user with a slider.

Using Java to work with Microsoft Excel spreadsheets has never been easer with the help of the JExcel API, a Java library that provides the ability to read, write, and modify Microsoft Excel spreadsheets from within Java applications.

The Java collections framework contains classes you use to maintain collections of other objects. These collection classes have different performance and ordering properties. See how the HashMap and HashSet Classes allow objects to be added to a collection, removed from a collection, or found in roughly constant time. Discover how to use these classes and what to do to achieve good performance from them.

Learn about color distance, projecting 3D coordinates onto a 2D display plane, and edge detection. Understanding these concepts will help you to better understand modern image processing.

Follow these steps for smoother updates of minor releases and less painful migrations to major releases.

The votes are in and the winners have been selected. See what products and technology our readers have chosen to be the best in their respective category.

Examine a new program written entirely in Java that you can use to edit the pixels in your digital photos on a pixel-by-pixel basis.

Explore Java collections framework classes that implement the SortedSet interface and how they keep a set of objects in a guaranteed order, independent of the order that they are added to the collection.