Java Reference
In-Depth Information
CHAPTER 1
Mapping the Java Jungle
A lthough at its heart Java ME is really just an adaptation of the Java language, class
libraries, and concepts to fit constrained devices, the business behind Java ME is in fact
quite different. A firm grasp of the Java ME market, platform, and terminology will put
you in good stead to developing successful products using Java ME.
In this chapter, I begin by introducing the market for Java ME. Next, I take you on a
tour of the Java ME platform, showing you how Sun identified and defined the basic
requirements for mobile platforms, and how manufacturers, carriers, and others have
extended this basic platform. Finally, I discuss how the process of application develop-
ment for Java ME is different, and I show you how important it is to know your audience,
target devices, and distribution channel.
After reading this chapter, you will understand why Java ME differs from Java. You
will see how device manufacturers, wireless operators, and consumers view Java ME, and
how Java ME meets the needs of all of these parties. Armed with this knowledge, you'll be
able to better manage a Java ME development project.
Introducing the Market for Java ME
A trio of forces dominates the Java ME market: device manufacturers looking to differenti-
ate their products in the marketplace, wireless operators seeking to differentiate services
and raise the average revenue per user (ARPU), and consumers personalizing their
devices in new and novel ways.
Looking from the Device Manufacturers' Perspective
The interplay between device manufacturers and wireless operators is complex. Manu-
facturers are in constant competition with each other to differentiate their products,
while at the same time, in many markets they are beholden to wireless operators to meet
stringent requirements for features and functionality.
Device manufacturers can be broadly separated into two categories: original equip-
ment manufacturers (OEMs) and original design manufacturers (ODMs). OEMs build
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