By Ray Rischpater
Have you ever thought of development video games in your cellular phone or different instant units? even if you're a first–time instant Java developer or an skilled expert, starting Java™ ME Platform brings fascinating instant and cellular Java program improvement correct on your door and gadget!
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Extra info for Beginning Java ME Platform
The most highly embedded devices may use only the Foundation Profile with a custom package atop that to provide support for a custom-made liquid-crystal or light-emitting diode (LED) display, but by far the most common are devices with raster displays that need rich graphical user interfaces (GUIs). To accommodate this in a standard way, two profiles are available. The smaller of the two, the Personal Basis Profile, actually provides two class hierarchies for applications: the applet model, and a new hierarchy for media devices that defines the Xlet programming model.
Io Library Additions to the CDC Connection ConnectionNotFoundException Connector ContentConnection Datagram HttpConnection HttpsConnection* SecureConnection* StreamConnectionNotifier InputConnection OutputConnection DatagramConnection StreamConnection *Only if the device supports HTTPS. Note that the CDC supports HTTP out of the box, as opposed to the CLDC, which does not include HTTP except as provided by the MIDP. Wrapping Up If you take away one thing from this chapter, it’s that the key difference between the CLDC and the CDC is what’s included in terms of classes.
Selecting Appropriate Device Targets As you’ve seen, the triad of configurations, profiles, and packages means managing a lot of different APIs. For many kinds of applications, this may not be a serious problem— most productivity and network applications need just a network layer, some GUI elements, and a persistent store, which is available under just about any combination of configuration and profile you might encounter. That’s not always the case, however. Your application might depend on functionality present in only a specific package, perhaps, either by design (say, a Bluetoothderived application for proximity detection) or product differentiation.