abstract class AbsBottle { public abstract void Interact(AbsWater water); }
public override void Interact(AbsWater water)
{
Console.WriteLine(this.GetType().Name + " add " + water.GetType().Name);
}
public Client(AbsFactory factory)
{
bottle = factory.CreatBottle();
water = factory.CreateWater();
}
public abstract void Interact(AbsWater water);
