MIDP : Java Glossary

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MIDP

MIDP (Mobile Information Device Profile), like the CLDC (Connected Limited Device Configuration), is a specification document. The MIDP is the API (Application Programming Interface) that sits on top of the core to let you do interesting things on a mobile device (handheld, cell phone), such as the user interface. version 2.0, MIDP-2, adds multimedia and gaming, over-the-air and end-to-end security. MIDP is not compatible with AWT (Advanced Windowing Toolkit) or Swing. It uses the stripped down javax.microedition.lcdui api as its GUI (Graphic User Interface). Personal profile in common on PDA (Personal Digital Assistant)s and PDA/cells. MIDP in common on pure cell phones.

A MIDP application has some jar files each with a MANIFEST.MF, similar to an application manifest and a jad file which lists the midlets and jars for a bundle.

How does Software get into a Cell-Phone?

If the phone has Internet access, I presume it is possible to download the jad file (mime text/vnd.sun.j2me.app-descriptor) from an ordinary website given the URL (Uniform Resource Locator).
If the phone has WAP (Wireless Application Protocol) access, you upload the jad file to a host like waphq.net. Your app gets assigned a number. Anyone wanting to load the software uses their cell phone wap browser to navigate to the site e.g. http://waphq.net/wap.php and enters the number.
Each phone may have a proprietary way to upload code over a proprietary cable, sometimes called a conduit, with proprietary software from a desktop computer. For example, for Sanyo, the software is a $65.00 USD add on. Nokia uses PC-Suite. Some phones let you upload with Bluetooth. Some phones let you upload over in infrared link. Some phones look like a USB (Universal Serial Bus) storage device (flash drive) to the desktop. Some phones you program by plugging a memory card into them that you have loaded with your memory card writer slot.

Books

recommend book⇒Mobile Information Device Profile for Java 2 Micro Edition (J2ME): Professional Developer’s Guide

by:

C. Enrique Ortiz, Eric Giguère

978-0-471-03465-0

paperback

publisher:

John Wiley & Sons

published:

2001-01-15

This books covers the MIDP range of J2ME, coding for handhelds and cell phones.

Greyed out stores probably do not have the item in stock

Learning More

Oracle’s Technetwork MIDP

MIDP Javadoc on MIDlet

MIDP Javadoc on Display

MIDP Javadoc on Displayable

MIDP Javadoc on Command

MIDP Javadoc on TextField

MIDP Javadoc on Choice

MIDP Javadoc on RecordStore

Blackberry
Blackberry JDE
BREW
cell phone
CLDC
Java ME
JME FAQ: MIDP enabled cell phones
KVM
ME4SE
midlet
Midlet Central
MIDP at Sun
MIDP tutorial
Nokia
Personal Profile
PersonalJava
Samsung
Sun cell phone simulator: CDLC/MIDP toolkit SDK
Verisign FAQ on MIDP jar signing

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