January 2015
Beginner to intermediate
264 pages
5h 54m
English
Content preview from Professional Java EE Design Patterns
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9 Asynchronous
WHAT’S IN THIS CHAPTER?
- Introduction to asynchronous programming
- What is asynchronous programming
- Asynchronous programming using threads
- Using asynchronous programming in beans
- Asynchronous programming in servlets
- When and where to best use asynchronous techniques
WROX.COM CODE DOWNLOADS FOR THIS CHAPTER
The wrox.com code download for this chapter is found at www.wrox.com/go/projavaeedesignpatterns on the Download Code tab. The code is in the Chapter 9 download and individually named according to the names throughout the chapter.
Although asynchronous programming is not always listed as a design pattern, it has been a popular and important programming model for the past decade. The asynchronous programming model relies on multithreading and executing the given functionality in a separate thread. Not only do multithreaded environments and programming languages take advantage of asynchronous programming techniques, but single-threaded platforms, such as the popular server-side JavaScript platform NodeJS, make good use of asynchronous programming principles.
Java was designed to support multiple threads from its start. However, it failed to provide a simple approach to making asynchronous calls. The Future<T> interface, which was introduced in Java 5, was Java’s first attempt at implementing asynchronous ...
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