Java Reference
In-Depth Information
Intermezzo
T
his next part of the topic is crucially important for you as a mobile applications devel-
oper. Today's Java ME platform is more connected than ever before, with required support
for accessing today's Internet with the ubiquitous HTTP, as well as optional interfaces for
lower-level Internet protocols as well as wireless protocols such as Bluetooth and SMS.
Nearly every application of value requires at least some data communications capability.
Plan on reading Chapter 12 closely, because its explanation of the GCF underpins commu-
nication within Java ME. If you're developing applications that utilize web services, read
Chapter 13, because it teaches you how to work with Extensible Markup Language (XML),
the lingua franca of the Internet. Wireless messaging (the topic of Chapter 14) is optional,
but even if you aren't planning on using the wireless messaging interface, I recommend
you at least skim this chapter so you have an understanding of the wireless communica-
tions options available to you.
