car.java~1~

《深入浅出设计模式》的完整源代码

package checkcar;

public class Car {
  private Engine  engine = new Engine();
   private Body    body   = new Body();
    private Wheel[] wheels
        = { new Wheel("front left"), new Wheel("front right"),
           new Wheel("back left") , new Wheel("back right")  };
    void accept(Visitor visitor){
       visitor.visit (this);
       engine.accept (visitor);
       body.accept (visitor);
       for (int i = 0; i < wheels.length - 1; i++)
       {
         ((Wheel)wheels[i]).accept(visitor);
         }
    }
}