Run time problem

when i run a project,it shows an exception like "unable to create MIDlet".It also shows "running with locale:English_united States.1252 running in the identified third party security domain"

"please help...."

program is

import javax.microedition.lcdui.*; import javax.microedition.midlet.MIDlet;

public class MidletLifecycle extends MIDlet{ private Form form;

private Display display;

public MidletLifecycle(){ System.out.println("MidletLifecycle constructure"); }

public void startApp(){ form = new Form("Midlet Lifecycle"); display = Display.getDisplay(this); String msg = "This is the Lifecycle of Midlet!"; form.append(msg); display.setCurrent(form); }

public void pauseApp(){ System.out.println("You are in pauseApp()..."); }

public void destroyApp(boolean destroy){ System.out.println("You are in destroyApp()..."); notifyDestroyed(); } }