1,mxml据说是程序的入口，其实质与java及c的main函数一致，形式上和实质上的调用端

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init02()">
<mx:Script>
<![CDATA[
import mx.containers.Canvas;
public function init02():void var b:Boy=new Boy();
//b.car.drawLine();
addChild(b.canvas); ]]>
</mx:Script>
</mx:Application>

2，Boy类，按ActionScript写出来的程序虽然与一般的java语言存在差异，但是就实质来说是一致的。Boy类引用另一个car类

package import mx.containers.Canvas;
public class Boy var car:Car;
var canvas:Canvas;
public function Boy() canvas=new Canvas();
canvas.graphics.lineStyle(1);
canvas.graphics.moveTo(0,0);
canvas.graphics.lineTo(500,500); car=new Car();
car.publicName="H";
car.publicId="K2";
car.publicSpeed=50;
var str:String="boy"+car.publicId+car.publicName+car.publicSpeed;
car.output(str);
}

}
}

3，这是典型的类似java的Bean的一个类，看它的get和set方法，就知道了

package import mx.containers.Canvas;
import mx.controls.Alert;
public class Car private var name:String;
private var id:String;
private var speed:int;
public function Car() }
public function drawLine():void var canvas:Canvas=new Canvas();
canvas.graphics.lineStyle(1);
canvas.graphics.moveTo(0,0);
canvas.graphics.lineTo(500,500); }
public function output(str:String):void Alert.show("boy..."+str); public function set publicName(name:String):void this.name=name; public function get publicName():String return name; public function set publicId(id:String):void this.id=id; public function get publicId():String return id; public function set publicSpeed(speed:int):void this.speed=speed; public function get publicSpeed():int return speed;
}

}
}

鉴于本侠才接触ActionScript，就其中的玄妙也不是很清楚，就写到这里了