March 2002
Intermediate to advanced
400 pages
8h 44m
English
Content preview from Wireless J2ME™ Platform ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The Wireless Application Environment
At the application layer, external interfaces, APIs, and transport mechanisms provide one kind of description of a system. This is the perspective that interests application developers who must know how to access and how to interface to system software services.
Other perspectives describe other parts of a system. For instance, systems have state models, transaction processing models, and so forth that cannot be adequately described by a diagram such as Figure 11.1. At some point in the application design process, application developers need to understand these characteristics of the systems to which they interface.
Figure 11.2 is a logical schematic diagram that shows some typical system level components ...
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