我创建了一个Vechile类，代码如下：
//////////////////////////////
class Vehicle {
    private var _name:String;
    private var _numberPlate:String;
    private static var _counter:Number = 0;
    public function Vehicle(namevalue:String, numberPlatevalue:String) {
        _name = namevalue;
        _numberPlate = numberPlatevalue;
        _counter++;
        trace("车辆的名称是："+_name+"\n车牌号是："+_numberPlate);
    }
    public static function get counter():Number {
        return _counter;
    }
    public function get name() {
        return _name;
    }
    public function set name(a:String) {
        _name = a;
    }
    public function get numberPlate():String {
        return _numberPlate;
    }
    public function set numberPlate(a:String) {
        _numberPlate = a;
    }
    function drive() {
        trace(_name + "车开动了！");
    }
    function stop() {
        trace(_name + "车停止了！");
    }
}

//////////////////////////////
然后创建一个文件调用这个类，代码如下：
///////////////////////////////
trace(Vehicle.counter);
myVehicle1 = new Vehicle("东风标致307", "苏E7CXX");
trace(Vehicle.counter);
myVehicle2 = new Vehicle("江淮汽车", "京A5KXX");
trace(Vehicle.counter);
trace(myVehicle2.numberPlate);
myVehicle2.numberPlate = "沪A703XX";
trace(myVehicle2.numberPlate);
trace(myVehicle2._numberPlate);//照理应该不能输出
trace(myVehicle2._name);//照理应该不能输出
////////////////////////////////
根据定义，我这里_numberPlate和_name两个变量都是私有成员，应该不能输出的，可是运行的时候照输不误，不知道我到底错在哪里了？请高手指点一二，谢谢！！！！

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