January 2002
Intermediate to advanced
264 pages
8h 3m
English
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Chapter 3. The Mobile InformationDevice Profile (MIDP)
The Mobile Information Device Profile
(MIDP) is built on top of the CLDC, and defines an open application
development environment for what Sun calls Mobile
Information Devices (MIDs). In simpler terms, MIDP is the
J2ME profile that is used for wireless devices, such as mobile phones
and pagers. This chapter expands on the previous chapter by
introducing some of the fundamental concepts of MIDP and offering
programming guidelines that are used throughout the remainder of this
book.
As we mentioned in Chapter 1, the MIDP is governed by the Java Community Process. The MIDP is JSR 37, which is part of the Java Community Process. Like the CLDC, the MIDP is an ever-changing standard that actively solicits input from corporations and the general programming community. You can find more information on the MIDP at the following URL: http://java.sun.com/products/midp.
Mobile Information Devices
Again, let’s start off with some specifics. The MIDP standard defines a MID as a device with the following minimum characteristics:
- Display
A screen size of at least 96 x 54 pixels with at least a 1-bit display depth
- Input
A one-handed keyboard, two-handed keyboard, or touch screen
- Memory
32 KB of volatile memory for the Java runtime (heap); 128 KB of non-volatile memory for the MIDP components; and 8 KB of non-volatile memory for application-created persistent data
- Networking
A two-way intermittent connection, usually wireless, with limited ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.