Java ME (formerly J2ME) is a version of Java designed for small, resource-constrained devices. It allows programming of mobile phones, PDAs, TVs, and other devices. Java ME uses configurations like Connected Device Configuration (CDC) for devices like set-top boxes and Connected, Limited Device Configuration (CLDC) together with Mobile Information Device Profile (MIDP) for small mobile phones. It supports building applications like spreadsheets, games, and more on over 700 million Java-enabled mobile phones.

1. What is Java ME (J2ME)? 9/20/2010 Saurabh Jain 2006 1 www.openclassworld.org www.facebook.com/openclassworld Copyright : Saurabh Jain 2010

2. Java ME Earlier known as J2ME Specially tailored for small devices Micro-edition version of Java Supports programming of many devices including : Mobile Phones Personal Digital Assistants (PDAs) TVs Consumer Electronic Devices Smart Cards More than 700 million Java enabled mobile phones Most of today’s phones are Java enabled Two main configurations Connected Device Configuration (CDC) Connected, Limited Device Configuration (CLDC) 9/20/2010 Saurabh Jain 2006 2 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame

3. J2ME Java Micro Edition Supported by : Sun Nokia SonyEricsson BenQ Siemens LG Samsung OpenCable Many Others 9/20/2010 Saurabh Jain 2006 3 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame

4. Connected Device Configuration (CDC) Used to program devices such as : Wireless information devices Set – top boxes Car entertainment Systems CDC could be extended to the full power of Java 2 Standard Edition (J2SE) with the help of various profiles like: Foundation Profile Personal Basis Profile Personal Profile JDBC 9/20/2010 Saurabh Jain 2006 4 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame

5. Packages in CDC java.io java.lang java.lang.ref java.lang.reflect java.math java.net java.security java.security.cert java.text java.util java.util.jar java.util.zip javax.microedition.io 9/20/2010 Saurabh Jain 2006 5 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame

7. PagersApplication size earlier mostly below 64 kb and some devices even required it to be less than 32 kb. Now bigger applications are supported Used in conjunction with Mobile Information Device Profile (MIDP) Small but could be used to program even the most difficult of applications Provides an easy and a convenient platform to program the mobile devices 9/20/2010 Saurabh Jain 2006 6 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame

9. Multilingual Word Processor

10. Business Graphics

11. Multimedia Catalogs

12. Film Trailers

13. Business Forms

14. Games9/20/2010 Saurabh Jain 2006 7 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame

16. More than 700 million phones support this

17. Some major operators like Vodafone, Orange, Hutch, Airtel, Reliance Communication support it

18. More than 1000 devices support Java ME

19. All major manufacturers support Java ME

20. Easy to program

21. Powerful enough for most tasks

22. No need for high end devices

23. Constantly evolving platform9/20/2010 Saurabh Jain 2006 8 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame

25. Supports most of the needs of the programmers

26. A strong platform for programming mobile phones and other information devices

27. Built-in support for DRM and Security9/20/2010 Saurabh Jain 2006 9 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame

29. Java ME could be used to program the mobile phone with the same ease as that of a computer

30. CLDC – MIDP combine let us program almost all Java enabled mobile phones9/20/2010 Saurabh Jain 2006 10 Copyright : Saurabh Jain 2010 www.openclassworld.org/javame