Week 1: HelloMIDlet - Revision history

Deprimer: Protected "Week 1: HelloMIDlet" [edit=sysop:move=sysop]

2006-11-26T06:04:37Z

Protected "Week 1: HelloMIDlet" [edit=sysop:move=sysop]

← Older revision	Revision as of 23:04, 25 November 2006
(No difference)

Deprimer at 06:03, 26 November 2006

2006-11-26T06:03:57Z

← Older revision		Revision as of 23:03, 25 November 2006
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	* Right-click your project folder again and choose J2ME -> Create Package		* Right-click your project folder again and choose J2ME -> Create Package
	* Click the big Green Run button again. This time it should show signs of life and boot up your first Java program in whichever emulator you selected.		* Click the big Green Run button again. This time it should show signs of life and boot up your first Java program in whichever emulator you selected.



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Mepitans at 02:40, 20 November 2006

2006-11-20T02:40:48Z

← Older revision		Revision as of 19:40, 19 November 2006
Line 52:		Line 52:
	* Right-click your project folder again and choose J2ME -> Create Package		* Right-click your project folder again and choose J2ME -> Create Package
	* Click the big Green Run button again. This time it should show signs of life and boot up your first Java program in whichever emulator you selected.		* Click the big Green Run button again. This time it should show signs of life and boot up your first Java program in whichever emulator you selected.



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Deprimer at 21:31, 10 September 2006

2006-09-10T21:31:18Z

← Older revision		Revision as of 14:31, 10 September 2006
Line 5:		Line 5:
	#Verify configuration. Creating and running this simple program lets us know that we've installed the basic software and setup our environment correctly.		#Verify configuration. Creating and running this simple program lets us know that we've installed the basic software and setup our environment correctly.
	#Sanity check. I know how it is, you've been up for three days solidly working on your gestural controller / MySpace worm / life size matchstick version of Yoda. You've written this code which looks bug free, but nothing's working. Start at the beginning with the Hello World skeleton application to check your environment and slowly build up your application again.		#Sanity check. I know how it is, you've been up for three days solidly working on your gestural controller / MySpace worm / life size matchstick version of Yoda. You've written this code which looks bug free, but nothing's working. Start at the beginning with the Hello World skeleton application to check your environment and slowly build up your application again.


			== Tutorial ==

	* Right click anywhere in the blank space of the Package Explorer tab in Eclipse. Select New -> Project from the context menu. Select J2ME->J2ME Midlet Suite as the type of project.		* Right click anywhere in the blank space of the Package Explorer tab in Eclipse. Select New -> Project from the context menu. Select J2ME->J2ME Midlet Suite as the type of project.

Deprimer at 00:16, 8 September 2006

2006-09-08T00:16:13Z

← Older revision		Revision as of 17:16, 7 September 2006
Line 44:		Line 44:
	* Click on Midlets, then Add. Type HelloMidlet in the Name field, skip the Icon field and head straight to the Class field. A button should appear, allowing you to select your HelloMidlet source file.		* Click on Midlets, then Add. Type HelloMidlet in the Name field, skip the Icon field and head straight to the Class field. A button should appear, allowing you to select your HelloMidlet source file.
	* Right-click your project again, choose Run->Run As from the context menu. Double click Wireless Toolkit Emulator to create a new configuration and name it something like "Vanilla MIDlet".<br />		* Right-click your project again, choose Run->Run As from the context menu. Double click Wireless Toolkit Emulator to create a new configuration and name it something like "Vanilla MIDlet".<br />
	The selected project should be HelloMidlet. Click on the Midlet radio button under the Executable option and then click Search. It should easily find your default HelloMidlet ~~file.~~		The selected project should be HelloMidlet. Click on the Midlet radio button under the Executable option and then click Search. It should easily find your default HelloMidlet
	* Click Apply, then Run.		* Click Apply, then Run.
	* Whoa! Something exploded! Not cool. If you see something like this - that's fine, it just means that we forgot to compile our source file into a JAR file.		* Whoa! Something exploded! Not cool. If you see something like this - that's fine, it just means that we forgot to compile our source file into a JAR file.
	* Right-click your project folder again and choose J2ME -> Create Package		* Right-click your project folder again and choose J2ME -> Create Package
	* Click the big Green Run button again. This time it should show signs of life and boot up your first Java program in whichever emulator you selected.		* Click the big Green Run button again. This time it should show signs of life and boot up your first Java program in whichever emulator you selected.

Deprimer at 22:04, 7 September 2006

2006-09-07T22:04:16Z

New page

<h1>Hello MIDlet</h1>

To get you started and make sure that your environment is working nicely - I've created a fully featured MIDlet which has but one purpose in life - to say hello. The [http://en.wikipedia.org/wiki/Hello_world_program Hello world program] has a long and distinguished pedigree in the world of programming and for us it will serve two main purposes:

#Verify configuration. Creating and running this simple program lets us know that we've installed the basic software and setup our environment correctly.
#Sanity check. I know how it is, you've been up for three days solidly working on your gestural controller / MySpace worm / life size matchstick version of Yoda. You've written this code which looks bug free, but nothing's working. Start at the beginning with the Hello World skeleton application to check your environment and slowly build up your application again.

* Right click anywhere in the blank space of the Package Explorer tab in Eclipse. Select New -> Project from the context menu. Select J2ME->J2ME Midlet Suite as the type of project.
* Name your project something suitable - like <strong>HelloMidlet</strong>, then click Next.
* Choose your Device from the list. Anything will do, but if you have something exotic and you're feeling experimental - give it a go. Click Next again and then Finish.
* Once your project has been created, right-click on the <em>src</em> folder and choose New->Class.</a>
* Name your class HelloMidlet or whatever you called your project, ensuring that you spell it exactly as you did earlier (including case). Ignore Eclipse if it tries to warn you against using the default package.
* Once you've done that, copy and paste the text below into your file, overwriting anything that was there before. Save the file.
<pre>
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

public class HelloMidlet extends MIDlet implements CommandListener {

private Form aForm;

public HelloMidlet() {
aForm = new Form("HelloMidlet");
aForm.append(new StringItem(null, "Hello, MIDP! \n\nYou and me - we're gonna make sweet MIDlets together! "));
aForm.addCommand(new Command("Exit", Command.EXIT, 0));
aForm.setCommandListener(this);
}

public void startApp() {
Display.getDisplay(this).setCurrent(aForm);
}

public void pauseApp() {}

public void destroyApp(boolean unconditional) {}

public void commandAction(Command c, Displayable s) {
notifyDestroyed();
}
}
</pre>

* Double-click the HelloMidlet.jad file in your Package Explorer. It should open up the EclipseME JAD editor.
* Click on Midlets, then Add. Type HelloMidlet in the Name field, skip the Icon field and head straight to the Class field. A button should appear, allowing you to select your HelloMidlet source file.
* Right-click your project again, choose Run->Run As from the context menu. Double click Wireless Toolkit Emulator to create a new configuration and name it something like "Vanilla MIDlet".<br />
The selected project should be HelloMidlet. Click on the Midlet radio button under the Executable option and then click Search. It should easily find your default HelloMidlet file.
* Click Apply, then Run.
* Whoa! Something exploded! Not cool. If you see something like this - that's fine, it just means that we forgot to compile our source file into a JAR file.
* Right-click your project folder again and choose J2ME -> Create Package
* Click the big Green Run button again. This time it should show signs of life and boot up your first Java program in whichever emulator you selected.