/**

 * 桥接模式

 * @author TMAC-J

 * 应用于多维度方案

 * 用组合的形式代替继承

 * 符合单一职责原则

 * 一个类只有一个引起他变化的原因

 * 增加程序灵活性

 */

public class BridgePattern {

    abstract class Road{

        Car car;

        void run(){};

    }

    abstract class Car{

        void showMyName(){};

    }

    public class Street extends Road{

        public void run(){

            car.showMyName();

            System.out.println("在街道上上奔驰");

        }

    }

    public class SpeedRoad extends Road{

        public void run(){

            car.showMyName();

            System.out.println("在高速路上奔驰");

        }

    }

    public class Bus extends Car{

        public void showMyName(){

            System.out.println("公交车");

        }

    }

    public class SedanCar extends Car{

        public void showMyName(){

            System.out.println("轿车");

        }

    } 

    public void test(){

        Street street = new Street();

        street.car = new Bus();

        street.run();//输出结果为公交车在街道上奔驰

        SpeedRoad speedRoad = new SpeedRoad();

        speedRoad.car = new SedanCar();

        speedRoad.run();//输出结果为轿车在高速路上奔驰

    }

}