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发信人: xxxxx (因为寂寞), 信区: Programming
标 题: j2me: java 2 micro edition
发信站: 哈工大紫丁香 (2001年08月23日10:41:10 星期四), 站内信件
JavaTM 2 Platform, Micro Edition (J2METM Platform)
Recognizing that "one size doesn't fit all," Sun has regrouped its innovativ
e JavaTM technologies into three editions: Micro (J2METM technology), Standa
rd (J2SETM technology), and Enterprise (J2EETM technology). Each edition is
a developer treasure chest of tools and supplies that can be used with a par
ticular product:
Java virtual machines* that fit inside the range of consumer devices
a library of APIs that are specialized for each type of device
tools for deployment and device configuration
a profile, that is, a specification of the minimum set of APIs useful for a
particular kind of consumer device (set-top, screenphone, wireless, car, and
digital assistant) and a specification of the Java virtual machine function
s required to support those APIs
J2ME technology specifically addresses the vast consumer space, which covers
the range of extremely tiny commodities such as smart cards or a pager all
the way up to the set-top box, an appliance almost as powerful as a computer
. Like the other editions, the J2ME platform maintains the qualities that Ja
va technology has become famous for:
built-in consistency across products in terms of running anywhere, any time,
over any device
portability of the code
leveraging of the same Java programming language
safe network delivery
applications written with J2ME technology are upwardly scalable to work with
the J2SE and J2EE platforms
With the delivery of the J2ME platform, Sun provides a complete, end-to-end
solution for creating state-of-the-art networked products and applications f
or the consumer and embedded market. J2ME technology enables device manufact
urers, service providers, and content creators to gain a competitive advanta
ge and capitalize on new revenue streams by rapidly and cost-effectively dev
eloping and deploying compelling new applications and services to their cust
omers worldwide.
Find out more about the J2ME platform in these Frequently Asked Questions.
Data Sheet Find out some of the high-level specifics of the Java 2 Plaftorm
, Micro Edition in the data sheet (pdf, 60K)
Related Downloads Connected Device Configuration (CDC) and C virtual machin
e
CDC is a Java Community Process effort that has standardized a portable, ful
l-featured Java[tm] 2 virtual machine building block for next-generation, co
nsumer electronic and embedded devices. CDC runs on top of the C Virtual Mac
hine (CVM) that is provided as part of this release. (available through Sun
Community Source Licensing)
Foundation Profile
The Foundation Profile is a set of Java APIs which, together with the Connec
ted Device Configuration (CDC), provides a J2ME application runtime environm
ent targeted at next-generation, consumer electronic and embedded devices. (
available through Sun Community Source Licensing)
Connected Limited Device Configuration (CLDC) and K virtual machine
CLDC Java Community Process effort that has standardized a portable, minimum
-footprint Java building block for small, resource-constrained devices. CLDC
runs on top of Sun's K Virtual Machine (KVM) that is provided as part of th
is release. (available through Sun Community Source Licensing)
Mobile Information Device Profile (MIDP)
The Mobile Information Device Profile (MIDP) is a set of Java[tm] APIs which
, together with the Connected, Limited Device Configuration (CLDC), provides
a complete J2ME application runtime environment targeted at mobile informat
ion devices, such as cellular phones and two-way pagers. (available through
Sun Community Source Licensing)
J2ME Wireless Toolkit
The J2ME Wireless Toolkit is a set of tools that provides developers with th
e emulation environment, documentation and examples needed to develop CLDC/M
IDP compliant applications.
Related Events Find out more about the J2ME platform at:
2001 JavaOneSM Conference
November 28-30, 2001 — Yokohama, Japan
2002 JavaOne Conference
March 25-29, 2002 — Moscone Center, San Francisco
Past Events
In the News Picture Postcards from the Cutting Edge: JavaTM Technology Tran
smits Photos -- Wirelessly
LightSurf Technologies, Inc. provides end-to-end solutions to transmit digit
al media between diverse wireless devices, and across networks of digital me
dia. (Feature Story, July 19)
ARM and Sun Collaborate on Next-Generation Embedded JavaTM Technology
ARM and Sun Microsystems, Inc. have reached an agreement to work together to
develop new Java technologies optimized for the wireless device market. (Pr
ess Release, June 28)
Mobility Technologies Chooses Valaran Corporation To Provide Mobile Applicat
ions
Agreement Promises first-ever instant traffic alert service to reach J2ME mo
bile device users built using JiniTM network technology. (Press Release, Jun
e 18)
More News
Documentation For detailed information on all of these technologies, please
see Java Consumer Software Documentation.
Developer Support The newest software subscription from Sun Developer Essen
tialsSM: Java 2 Micro Edition
A 2 year, quarterly-updated subscription to all the Sun technologies for the
Consumer & Embedded markets.
For more developer related information regarding Java 2 technologies please
look at the Sun Developer Connection (SDC) and the Java Developer Connection
(JDC). By joining the SDC and JDC you can get access to technical support,
discussion forums, online training, technical articles, bug parades, early a
ccess code and more
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