初试桥接模式-demo（开学选课）

public class Student {

    public static void main(String[] args) {
        Faculty f= new Math();
        f.SetCourse(new BasisOfComputerEngineering());
        f.urriculum();
    }
}

//选课
interface CurriculaVariable{
    //所有课程的抽象方法
    void urriculum();
}
//各门课程
class BasisOfComputerEngineering implements CurriculaVariable{

    @Override
    public void urriculum() {
        System.out.println("选择了计算机基础");
    }
}

//系
abstract class Faculty implements CurriculaVariable{
    //系中聚合选课
    protected CurriculaVariable cv;
    public void SetCourse(CurriculaVariable cv) {
        this.cv = cv;
    }
}
//数学系
class Math extends Faculty{

    @Override
    public void urriculum() {
        System.out.println("数学系选课");
        ((CurriculaVariable) cv).urriculum();
    }
    
}

输出为：