Sun Microsystems J2ME User Manual download pdf (Page 20)

8 J2ME Wireless Toolkit User’s Guide • October 2004

If you are following along with the example project, create a new Java source file

TinyMIDlet.java. It should be saved in the source directory of your project,

which will be {toolkit} \apps\Tiny\src\TinyMIDlet.java where {toolkit} is the

installation directory of the toolkit. The contents of the file are a very simple

MIDlet:

import javax.microedition.lcdui.*;

import javax.microedition.midlet.MIDlet;

public class TinyMIDlet

extends MIDlet

implements CommandListener {

public void startApp() {

Display display = Display.getDisplay(this);

Form mainForm = new Form("TinyMIDlet");

mainForm.append("Welcome to the world of MIDlets!");

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

mainForm.addCommand(exitCommand);

mainForm.setCommandListener(this);

display.setCurrent(mainForm);

}

public void pauseApp () {}

public void destroyApp(boolean unconditional) {}

public void commandAction(Command c, Displayable s) {

if (c.getCommandType() == Command.EXIT)

notifyDestroyed();

}

Save the file when you’re finished.

2.2.2 Build

The next step is to build your source code. The toolkit makes this part very easy.

In the KToolbar window, click on the Build button. Assuming you saved your

source file in the right place, the toolkit will find it and compile it. Compilation

errors are displayed in the KToolbar console. If you have errors, go back and edit

the source code to fix them. Once you’ve eliminated your errors, the KToolbar

console tells you the project was successfully built.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 133 134

No comments

Sun Microsystems J2ME User Manual Page 20