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Posted By

whitetiger on 11/09/06

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Last Edited at 11/09/06 11:55pm

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J2ME - HelloWorld

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  1. import javax.microedition.lcdui.Display;
  2. import javax.microedition.lcdui.Form;
  3. import javax.microedition.midlet.MIDlet;
  4. import javax.microedition.midlet.MIDletStateChangeException;
  5.  
  6. public class HelloJ2ME_a1 extends MIDlet
  7. {
  8. 	private Display mDisplay;
  9. 	private Form mForm;
  10.  
  11. 	protected void startApp() throws MIDletStateChangeException
  12. 	{
  13. 		if(mForm == null)
  14. 		{
  15. 			// Creo il Form dove inserire il messaggio (questo puo' essere pensato come ad un JFrame)
  16. 			mForm = new Form("Hello J2ME !!!");
  17.  
  18. 			// Ottengo un Display per la MIDlet
  19. 			mDisplay = Display.getDisplay(this);
  20. 		}
  21.  
  22. 		// Imposto il Form corrente nel Display
  23. 		mDisplay.setCurrent(mForm);
  24. 	}
  25.  
  26. 	protected void pauseApp()
  27. 	{
  28.  
  29. 	}
  30.  
  31. 	protected void destroyApp(boolean arg0) throws MIDletStateChangeException
  32. 	{
  33. 		// Notifico alla JVM della morte della MIDlet (viene chiamato il Garbage Collector)
  34. 		this.notifyDestroyed();
  35. 	}
  36. }

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