java platform micro edition software development kit 3

8/9/2019 Java Platform Micro Edition Software Development Kit 3

1/18

Java Platform Micro Edition

Software Development Kit 3.0 forWindows

1


2/18

What is CLDC & MIDP?

2


3/18

CLDC

The Connected Limited Device Configuration (CLDC) defines the base

set of application programming interfaces and a virtual machine for

resource-constrained devices like mobile phones, pagers, and

mainstream personal digital assistants. When coupled with a profile

such as the Mobile Information Device Profile (MIDP), it provides asolid Java platform for developing applications to run on devices

with limited memory, processing power, and graphical capabilities.

3


4/18

CLDC objectives

The goal of the CLDC specification is to standardize a highly

portable, minimum-footprint Java application development

platform for resource-constrained, network-connected devices. It is

developed through the Java Community Process (JCP), which

comprises more than 500 members, including mobile operators andservice providers, wireless handset manufacturers, and vendors of

mobile software. CLDC has been designed with the following goals

in view:

Facilitate application portability by abstracting native system

operations into standardized APIs

Extend device functionality by allowing dynamic downloading of

applications into the device

4


5/18

TARGET DEVICE

CLDC is designed to bring the many advantages of the Java platformto network-connected devices that have limited processing power,memory, and graphical capability, such as cellular phones, pagers,low-end personal organizers, and machine-to-machine equipment.In addition, CLDC can also be deployed in home appliances, TV set-

top boxes, and point-of-sale terminals. Target devices typically havethe following capabilities:

A 16-bit or 32-bit processor with a clock speed of 16MHz or higher

At least 160 KB of non-volatile memory allocated for the CLDClibraries and virtual machine

At least 192 KB of total memory available for the Java platform Low power consumption, often operating on battery power

Connectivity to some kind of network, often with a wireless,intermittent connection and limited bandwidth

5


6/18

MIDP

The Mobile Information Device Profile (MIDP) is a key element of

the Java 2 Platform, Mobile Edition (J2ME). When combined with

the Connected Limited Device Configuration (CLDC), MIDP provides

a standard Java runtime environment for today's most popular

mobile information devices, such as cell phones and mainstream

personal digital assistants (PDAs). The MIDP specification was

defined through the Java Community Process (JCP) by an expert

group of more than 50 companies, including leading device

manufacturers, wireless carriers, and vendors of mobile software. It

defines a platform for dynamically and securely deploying

optimized, graphical, networked applications.

6


7/18

CLDC and MIDP provide the core application functionality requiredby mobile applications, in the form of a standardized Java runtimeenvironment and a rich set of Java APIs. Developers using MIDP canwrite applications once, then deploy them quickly to a wide varietyof mobile information devices. MIDP has been widely adopted asthe platform of choice for mobile applications. It is deployedglobally on millions of phones and PDAs, and is supported byleading integrated development environments (IDEs). Companiesaround the world have already taken advantage of MIDP to write a

broad range of consumer and enterprise mobile applications.

BENEFITS

Rich User Interface Capabilities

Extensive Connectivity

Multimedia and Game Functionality Over-the-Air-Provisioning

End-to-End Security:

7


8/18

INSTALLATION

8


9/18

System requirement

Minimum Hardware

300-350 MB hard disk space

1 GB system RAM

1 GHz Pentium CPU

Required Software

Microsoft Windows XP or Vista 32-bit with recent service packs

Java SE Development Kit - JDK 1.6 or higher

Apple QuickTime player (required to play AMR media on Windows)

9


10/18

How to Install

Verify that your system meets the preceding minimum hardware

and software requirements.

Download Java ME Platform SDK 3.0.

Double-click the executable file to start the installation, and follow

the prompts.

As the installation concludes, the Device Manager appears in the

Windows system tray.

10


11/18

11


12/18

First MIDlet program

12


13/18

Click on file -> New Project(ctrl+alt+N)

13


14/18

Select Project Name & Location

14


15/18

Select Device & Device Configuration

15


16/18

HelloMIDlet.javapackage hello;

import javax.microedition.midlet.*;

import javax.microedition.lcdui.*;

public class HelloMIDlet extends MIDlet implements CommandListener {

private Command exitCommand; // The exit command

private Display display; // The display for this MIDlet

public HelloMIDlet() {

display = Display.getDisplay(this);

exitCommand = new Command("Exit", Command.EXIT, 0);

}

public void startApp() {

TextBox t = new TextBox("Hello", "Hello, World!", 256, 0);

t.addCommand(exitCommand);

t.setCommandListener(this);

display.setCurrent(t);

}

16


17/18

public void pauseApp() {

}

public void destroyApp(boolean unconditional) {}

public void commandAction(Command c, Displayable s) {

if (c == exitCommand) {

destroyApp(false);

notifyDestroyed();

}

}

}

Click on play button & program will run on emulator

17


18/18

18

OUTPUT:

java platform micro edition software development kit 3

Documents