Java ME An Introduction
www.javameblog.com A presentation by Anoop KS <anoopengineer@gmail.com>
What is it?
<ul><li>Java 2 Micro Edition. </li></ul><ul><li>JAVA for MICRO devices. </li></ul><ul><li>Micro Device: </li></ul><ul><ul>...
Capabilities Multimedia Image Capture Audio Playback Video Playback Video Recording Audio Recording
Capabilities Connectivity HTTP Datagram Secure HTTP Serial IO Bluetooth Infrared Sockets
Capabilities Gaming GameCanvas Sprites Layers 3D Support TiledLayer LayerManager
Capabilities Personal Information Management File Management SMS MMS GPS  Built-in Database SIP Security and Trust Services
Architecture MMAPI, 3D API … Optional Packages Profile Configuration JVM MIDP, PBP … CLDC, CDC
Configurations <ul><li>Limited virtual machine termed KVM. </li></ul><ul><li>Geared towards a family of devices. </li></ul...
Profiles <ul><li>Geared towards specific use of the device. </li></ul><ul><li>Extends the configuration. </li></ul><ul><li...
<ul><li>For small devices like:  </li></ul><ul><ul><li>Cell phones </li></ul></ul><ul><ul><li>PDAs </li></ul></ul><ul><ul>...
Mobile Phones use MIDP over CLDC
CLDC <ul><li>No floating point support. </li></ul><ul><li>No object finalization. </li></ul><ul><li>No support for JNI or ...
MIDP <ul><li>MIDP applications are called MIDlets. </li></ul><ul><li>Contains APIs for: </li></ul><ul><ul><li>Application ...
MIDlet Life Cycle
Why J2ME? <ul><li>Portability. </li></ul><ul><li>Flexible and consistent user interfaces. </li></ul><ul><li>Robust securit...
Portability
User Interfaces <ul><li>Consistent Look and Feel </li></ul><ul><li>Flexibility </li></ul>
Security <ul><li>Java’s Security Architecture </li></ul><ul><li>Cryptography Support </li></ul><ul><li>HTTPS </li></ul><ul...
Network Support <ul><li>Wifi </li></ul><ul><li>GPRS </li></ul><ul><li>Bluetooth </li></ul><ul><li>Infrared </li></ul><ul><...
Development Time Time is  Money “ ”
Larger Audience
Initial Investment
Questions?
www.javameblog.com A presentation by Anoop KS <anoopengineer@gmail.com>
Thank You.
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Java ME An Introduction. www.javameblog.com

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A ppt that I used to explain what Java ME was all about to some guys.

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  • Java ME An Introduction. www.javameblog.com

    1. 1. Java ME An Introduction
    2. 2. www.javameblog.com A presentation by Anoop KS <anoopengineer@gmail.com>
    3. 3. What is it?
    4. 4. <ul><li>Java 2 Micro Edition. </li></ul><ul><li>JAVA for MICRO devices. </li></ul><ul><li>Micro Device: </li></ul><ul><ul><li>Limited Processing Power </li></ul></ul><ul><ul><li>Limited Storage Capacity </li></ul></ul><ul><ul><li>No or Low Bandwidth Network Connection </li></ul></ul><ul><ul><li>eg: Mobile phones, PDAs, Set top boxes, Car Navigation systems etc. </li></ul></ul>What is it?
    5. 5. Capabilities Multimedia Image Capture Audio Playback Video Playback Video Recording Audio Recording
    6. 6. Capabilities Connectivity HTTP Datagram Secure HTTP Serial IO Bluetooth Infrared Sockets
    7. 7. Capabilities Gaming GameCanvas Sprites Layers 3D Support TiledLayer LayerManager
    8. 8. Capabilities Personal Information Management File Management SMS MMS GPS Built-in Database SIP Security and Trust Services
    9. 9. Architecture MMAPI, 3D API … Optional Packages Profile Configuration JVM MIDP, PBP … CLDC, CDC
    10. 10. Configurations <ul><li>Limited virtual machine termed KVM. </li></ul><ul><li>Geared towards a family of devices. </li></ul><ul><li>Subset of J2SE API </li></ul><ul><li>Two Configurations: </li></ul><ul><ul><li>Connected Device Configuration (CDC) </li></ul></ul><ul><ul><li>Connected Limited Device Configuration (CLDC) </li></ul></ul>
    11. 11. Profiles <ul><li>Geared towards specific use of the device. </li></ul><ul><li>Extends the configuration. </li></ul><ul><li>Some profiles: </li></ul><ul><ul><li>Mobile Information Device Profile (MIDP). </li></ul></ul><ul><ul><li>Personal Digital Assistant Profile (PDAP). </li></ul></ul><ul><ul><li>Foundation Profile. </li></ul></ul><ul><ul><li>Personal Profile. </li></ul></ul>
    12. 12. <ul><li>For small devices like: </li></ul><ul><ul><li>Cell phones </li></ul></ul><ul><ul><li>PDAs </li></ul></ul><ul><ul><li>Pagers. </li></ul></ul><ul><li>Low Power </li></ul><ul><li>Low Memory </li></ul><ul><li>Low Bandwidth </li></ul>CLDC CDC <ul><li>For less restricted devices like: </li></ul><ul><ul><li>Set-Top Boxes </li></ul></ul><ul><ul><li>Car Navigation Systems. </li></ul></ul><ul><li>Full Featured JVM called CVM. </li></ul>
    13. 13. Mobile Phones use MIDP over CLDC
    14. 14. CLDC <ul><li>No floating point support. </li></ul><ul><li>No object finalization. </li></ul><ul><li>No support for JNI or reflection. </li></ul><ul><li>No thread groups or daemon thread. </li></ul><ul><li>No application-defined class loaders. </li></ul><ul><li>Implementation-defined error handling. </li></ul><ul><li>Class verification is done differently </li></ul>
    15. 15. MIDP <ul><li>MIDP applications are called MIDlets. </li></ul><ul><li>Contains APIs for: </li></ul><ul><ul><li>Application management and control. </li></ul></ul><ul><ul><li>User interface. </li></ul></ul><ul><ul><li>Persistent Storage. </li></ul></ul><ul><ul><li>Networking. </li></ul></ul><ul><ul><li>Timers. </li></ul></ul>
    16. 16. MIDlet Life Cycle
    17. 17. Why J2ME? <ul><li>Portability. </li></ul><ul><li>Flexible and consistent user interfaces. </li></ul><ul><li>Robust security. </li></ul><ul><li>Built-in network protocols. </li></ul><ul><li>Networked and offline applications. </li></ul><ul><li>Larger audience for the application. </li></ul><ul><li>Reduced application development time. </li></ul>
    18. 18. Portability
    19. 19. User Interfaces <ul><li>Consistent Look and Feel </li></ul><ul><li>Flexibility </li></ul>
    20. 20. Security <ul><li>Java’s Security Architecture </li></ul><ul><li>Cryptography Support </li></ul><ul><li>HTTPS </li></ul><ul><li>SSL </li></ul>
    21. 21. Network Support <ul><li>Wifi </li></ul><ul><li>GPRS </li></ul><ul><li>Bluetooth </li></ul><ul><li>Infrared </li></ul><ul><li>Any future technology. </li></ul>
    22. 22. Development Time Time is Money “ ”
    23. 23. Larger Audience
    24. 24. Initial Investment
    25. 25. Questions?
    26. 26. www.javameblog.com A presentation by Anoop KS <anoopengineer@gmail.com>
    27. 27. Thank You.
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