J2ME Wireless Tool Kit (WTK)

Cornelius Koo - 2005

KToolBar

Start -> Programs -> J2ME Wireless ToolKit 2.0 -> KToolBar

Project File Organization

Create New Project

Open Existing Project

Editing MIDlet Suite Attribute

Modifying MIDlet Suite Attributes

Modifying User Defined Attributes

Modifying MIDlet-Specific Attributes

Simple Hello World

import javax.microedition.lcdui.Display;

import javax.microedition.lcdui.TextBox;

import javax.microedition.midlet.MIDlet;

import javax.microedition.midlet.MIDletStateChangeException;

public class HelloWorld extends MIDlet {

private Display display;

public HelloWorld() {

display = Display.getDisplay(this);

}

protected void startApp() throws MIDletStateChangeException {

TextBox t = new TextBox(“Hello World MIDlet","Hello Small World",256,0);

display.setCurrent(t);

}

protected void pauseApp() {}

protected void destroyApp(boolean arg0) throws MIDletStateChangeException {}

}

Save this HelloWorld.java file at WTK20\apps\Hello World\src

Building Application

Running Locally

Cleaning Up Project

This will remove unnecessary files from project folder

Packaging

External Libraries

Place the .JAR files inside this /lib

directory for specific project.

Place the .JAR files inside this /lib

directory for all projects

Reference

• WTK User Guide. SUN Microsystem,

2003.