flex - Running a program with a package -

can 1 tell me if have saved following file test.mxml

if run program errors.if include class in package how should program run??

package { import flash.display.sprite; import flash.media.*; public class test  {      public function test() {           //alerting code     } } } 

you can either have mxml class test.mxml:

<?xml version="1.0" encoding="utf-8"?> <s:application xmlns:fx="http://ns.adobe.com/mxml/2009"  xmlns:s="library://ns.adobe.com/flex/spark"  xmlns:mx="library://ns.adobe.com/flex/mx" minwidth="955" minheight="600" creationcomplete="application1_creationcompletehandler(event)"> <fx:script> <![cdata[ import mx.controls.alert; import mx.events.flexevent; protected function application1_creationcompletehandler(event:flexevent):void {    alert.show("test"); } ]]> </fx:script> </s:application> 

or can have pure actionscript class looks this:

test.as

package { import mx.controls.alert;    public class test   {      public function test()      {        alert.show("test");      }   } }