Mega Code Archive

 

Categories / Java / J2ME

 

Commands, Items, and Event Processing

//jad file (please verify the jar size) /* MIDlet-Name: ThrowException MIDlet-Version: 1.0 MIDlet-Vendor: MyCompany MIDlet-Jar-URL: ThrowException.jar MIDlet-1: ThrowException, ThrowException.png, ThrowException MicroEdition-Configuration: CLDC-1.0 MicroEdition-Profile: MIDP-1.0 MIDlet-JAR-SIZE: 100 */ import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; public class ThrowException extends MIDlet implements CommandListener {   private Display display;   private Form form = new Form("Throw Exception");   private Command exit = new Command("Exit", Command.SCREEN, 1);   private boolean isSafeToQuit = false;   public ThrowException() {     display = Display.getDisplay(this);     form.addCommand(exit);     form.setCommandListener(this);   }   public void startApp() {     display.setCurrent(form);   }   public void pauseApp() {   }   public void destroyApp(boolean unconditional) throws MIDletStateChangeException {     if (unconditional == false) {       throw new MIDletStateChangeException();     }   }   public void commandAction(Command command, Displayable displayable) {     if (command == exit) {       try {         if (isSafeToQuit == false) {           StringItem msg = new StringItem("Busy", "Please try again.");           form.append(msg);           destroyApp(false);         } else {           destroyApp(true);           notifyDestroyed();         }       } catch (Exception exception) {         isSafeToQuit = true;       }     }   } }