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J2ME Documentation

Data Sheets

CLDC Technology

Two virtual machines are available to support CLDC. The K Virtual Machine is our smallest virtual machine for CLDC, and supports handheld consumer devices with 128K to 512K of available memory for the Java technology stack. The CLDC HotSpot Implementation adds adaptive compilation for a dramatic increase in performance, with minimal increase in memory footprint.

CLDC HotSpot Implementation 1.1 White Paper (PDF, 190K)
KVM Data Sheet
KVM White Paper (PDF, 380K)

CLDC 1.1

CLDC Specification, V1.1
CLDC API Documentation, V1.1 (ZIP, 340K), (PDF, 3036K)

CLDC 1.0.4

CLDC Specification, V1.0
CLDC API Documentation, V1.0 (ZIP, 307K), (PDF, 2243K), Japanese (ZIP, 1.4MB)

MIDP Overview

MIDP 2.0

MIDP 1.0

MIDP 1.0 Specification, (JSR 37)
White Papers:
   MIDP APIs for Wireless Applications (PDF, 171K, 14 pages)
   Applications for Mobile Information Devices (PDF, 106K, 17 pages)
   Java Technology and the New World of Wireless Portals and mCommerce
Over The Air User Initiated Provisioning Recommended Practice (PDF, 99K, 24 pages)
Programming Wireless Devices with the Java 2 Platform, Micro Edition
MIDP 1.0 Style Guide (HTML) (ZIP, 667K)

CLDC Optional Packages

Mobile Media API
Specification, V1.0
Release Notes
Porting Guide (PDF, 874K)
White paper: Bringing Time-Based Multimedia to Consumer Devices (PDF, 95K)
Wireless Messaging API
Reference Implementation (PDF, 645K)
Bluetooth API
Java Partner Site (Motorola)

Generic Connection Framework Optional Package (GCF-OP) - NEW

The Generic Connection Framework was developed for use in the J2ME platform as an alternative to the more complex networking and I/O APIs contained in the java.net and java.io packages of the J2SE platform. By providing the Generic Connection Framework as an optional package (GCF-OP) to the J2SE platform, J2ME applications written to a number of common protocols in the java.microedition.io package can migrate to the J2SE platform.

Java Technology for the Wireless Industry (JTWI) - NEW

Defines the industry standard for the next generation of Java technology enabled mobile phones.

J2ME Wireless Toolkit

Tools for the development of MIDP compliant applications targeted at mobile information devices.

J2ME Wireless Toolkit 2.1 - NEW

User's Guide (PDF, 1197K; HTML)
Basic Customization Guide (PDF, 701K; HTML)
Binary Release Notes

J2ME Wireless Toolkit 2.0_01

User's Guide (PDF, 978K; HTML)
Basic Customization Guide (PDF, 619K; HTML)
Binary Release Notes

J2ME Wireless Toolkit 1.0.4

User's Guide (PDF, 890K; HTML)
Basic Customization Guide (PDF, 553K; HTML)
Binary Release Notes

J2ME Wireless Toolkit FAQ
Mobile Media API Emulator for Wireless Toolkit
- Release Notes
- User's Guide (PDF, 263K)

CDC Technology

CDC is a standards-based framework for building and delivering applications that can be shared across a range of network-connected consumer and embedded devices.

CDC White Paper (PDF, 1.4MB)
CDC Specification (JSR 36)
Foundation Profile
Foundation Profile is a set of Java APIs that support resource-constrained devices without a standards-based GUI system.
- Foundation Profile Specification (JSR 46)
- Porting Guide (PDF, 814K)
- Release Notes
Personal Basis Profile
Personal Basis Profile is a set of Java APIs that support resource-constrained devices with a standards-based GUI framework based on lightweight components. Personal Basis Profile also includes support for the xlet interface and all of the APIs included in Foundation Profile.
- Personal Basis Profile Specification (JSR 129)
- Programmer's Guide (PDF, 1.2MB)
- Porting Notes
- Release Notes
Personal Profile
Personal Profile is a set of Java APIs that support resource-constrained devices with a standards-based GUI framework based on AWT peer components. Personal Profile also includes support for the applet interface and all of the APIs included in Personal Basis Profile.
- Personal Profile Specification (JSR 62)
- Programmer's Guide (PDF, 1.3MB)
- Porting Notes
- Release Notes
CDC Optional Packages
Optional packages are technology-specific APIs that extend the functionality of a Java application environment.
- RMI Optional Package
  RMI Optional Package Specification (JSR 66)
- JDBC Optional Package
  JDBC Optional Package Specification (JSR 169)

Security and Trust Services API (SATSA) for J2ME - NEW

JSR 177 Overview

Java Card Technology

Enables the Java programming language to run on smart cards and other small devices.

Follow the previous links to download the Java Card 2.2.1or 2.2 Platform Specification bundle (ZIP format), which contains the following documents (PDF format):

Java Card API Specification
Java Card Runtime Environment Specification
Java Card Virtual Machine Specification
Java Card Specification Release Notes

Other J2ME Technologies

Java Embedded Server Software

Enables home appliances to be networked to each other and the Internet and to receive services on demand.

Open Services Gateway Initiative Specification, V1.0
Java Embedded Server Software 2.0 Download
API Documentation (ZIP, 139K)
Java Embedded Server Software 2.0:
   Tutorial (Microsoft Windows) (PDF, 219K)
   Tutorial (Solaris Environment) (PDF, 219K)
   Technical FAQ

PersonalJava Application Environment

A Java virtual machine and class library that enables applications for home, office, and mobile consumer devices.

PersonalJava API Specification, V1.2

Java TV Technology

Provides a development and deployment platform for interactive digital television.

Java TV API Specification, V1.0
Java TV API Technical Overview (PDF, 577K)

Java Telephony API

JTAPI is an extensible API designed to scale for use in a range of domains.

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