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High-Level Display Screens

//jad file (please verify the jar size) /* MIDlet-Name: DisplayAlert MIDlet-Version: 1.0 MIDlet-Vendor: MyCompany MIDlet-Jar-URL: DisplayAlert.jar MIDlet-1: DisplayAlert, , DisplayAlert MicroEdition-Configuration: CLDC-1.0 MicroEdition-Profile: MIDP-1.0 MIDlet-JAR-SIZE: 100 */ import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; 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.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; public class DisplayAlert extends MIDlet implements CommandListener {   private Display display;   private Alert alert;   private Form form = new Form("Throw Exception");   private Command exit = new Command("Exit", Command.SCREEN, 1);   private boolean exitFlag = false;   public DisplayAlert() {     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 (exitFlag == false) {           alert = new Alert("Busy", "Please try again.", null, AlertType.WARNING);           alert.setTimeout(Alert.FOREVER);           display.setCurrent(alert, form);           destroyApp(false);         } else {           destroyApp(true);           notifyDestroyed();         }       } catch (Exception exception) {         exitFlag = true;       }     }   } }