Java ME : Java Glossary

Java ME

JME (Java Micro Edition). Formerly called J2ME (Java 2 Micro Edition) , or JME and still called that by many — Java for handhelds and cell phones. Java ME does not refer to any VM or API (Application Programming Interface), it’s only an umbrella term for all smaller-than-desktop Java technologies, e.g. MIDP and Personal Profile. Personal profile is common on PDA (Personal Digital Assistant)s and PDA/cell phones. MIDP (Mobile Information Device Profile) in common on simple cell phones without PDA abilities. J2ME typically would be the Java language with the enterprise communications stripped out of it. RMI (Remote Method Invocation) is optional. Usually midlets must be signed, but other than that, there is no security breakout.

Oddly, MIDP is required to support HTTP (Hypertext Transfer Protocol) but not the lower level TCP/IP (Transmission Control Protocol/Internet Protocol) socket protocol it is based on. Some handsets support TCP/IP sockets.

CDC (Control Data Corporation) (Connected Device Configuration) is 2.5 meg and might be used in set top boxes. It is foundation for the Personal Basis Profile.

KVM (Kilobyte Virtual Machine) is smaller still and is designed for use in PalmPilot type PDAs PDA pocket organisers), mobiles, watches, embedded devices with low powered CPU (Central Processing Unit)s and intermittent network connectivity (MP3 player, electronics in a car dashboard, etc.).

Personal Java was an earlier attempt and is now obsolete.

There are a set of API s, starting from smallest to biggest, roughly they go: KVM (128K RAM (Random Access Memory)), CLDC (Connected Limited Device Configuration) (160K RAM), MIDP 1.0 Profile (288K RAM), CDC (2MB RAM), MIDP 2.0 Profile, Personal Basis Profile, Personal Profile.

Books

recommend book⇒Beginning J2ME: From Novice to Professional, Third Edition

by:

Jonathan Knudsen and Sing Li

978-1-59059-479-7

paperback

publisher:

Apress

published:

2005-04-25

Includes code. Covers many topics from HTTPS to games to bluetooth to 3D. Recommended my Daryl Pierce, author of the J2ME FAQ.

Greyed out stores probably do not have the item in stock

recommend book⇒Java 2 Micro Edition: Professional Developer’s Guide

by:

Eric Giguère

978-0-471-39065-7

paperback

publisher:

John Wiley & Sons

B000W7T980

kindle

published:

2000-11-17

A bit out of date.

Greyed out stores probably do not have the item in stock

About Mobility blog
BREW
Business Java
CDMA
cell phone
CLDC
EE
EmbeddedJava
Ericsson
GSM
iDEN
J2SE
Java CPU
JavaCard
JavaFX
KVM
Microfloat: third party math package for JME
MIDP
Motorola JavaME
NAMPS
Netbeans Mobility Pack: J2ME IDE
Nokia
Personal Profile
PersonalJava
Sun on Java ME
Windows CE

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