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Learn J2ME

In this section Professor Duckling teaches you the basics of MIDP Programming. In some of these tutorials you can not only learn but also execute examples and take tests for your acquired J2ME Skills.
J2ME for Beginners

Online EmulatorJ2ME Basics

 CLDC and MIDP 
 MIDlet Life Cycle
Build and Compile J2ME App
 Package java.lang
MIDP UI 
 RMS: Data Base Programming 
Network Programming. 

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MIDP Gaming

 Game Classes 
 Game Canvas
Sprites
 Layers
Tiles   

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MIDP 3.0

Introduction
Screen Saver & AutoStart
Liblets: External Libraries
Concurrency
Inter MIDlet Communication
RMS: New Features
lcdui: New Features
lcdui: Text
lcdui: Text Input
lcdui: File Selector
lcdui: Animated Images
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JSR 179: Location Based Services


 Introduction  
 LBS API & MIDP
KToolbar & LBS
 Location Polling
Landmarks 

Proximity
Orientation 

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J2ME Progamming for Windows Mobile, Palm OS and Linux Mobile

PDAP is J2ME profile for  Palm OS, Windows Mobile and Linux mobile. After a lot of politics J2ME for PDA's has finally arrived. This article gives you various development options available for PDAP. More>>

Dynamic cache management and performance tuning in J2ME

Keep this checklist ready for complex cache problems. Each mobile device can handle only a certain amount of cache and if this prescribed amount is exceeded then the dynamic memory blows up. This article gives you a nifty checklist for cache optimization. More>>

Decrease your J2ME application's JAR size

Optimize your data to fit your target mobile's capability. J2ME devices have JAR File restrictions and this could vary from 32 KB to 200KB and over. Depending on the devices your application is ported to, JAR sizes have to be decreased, here are some of the tricks you can use for decreasing the JAR file sizes. More>>

Crazy Test Phones

Don’t tear your hair due to faulty Java Phones. Like all gadgets mobile software could get corrupted. There is nothing much a developer can do about this. More>>

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