第4章-类与对象-实验2学校与教师

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问题描述：
模拟学校和教师的关系，学校有不同学科的老师，不同学科的老师上课的授课方式不同。
代码：

Test.java

public class Test {    public static void main(String[]args){        Teacher zhang,wang;        zhang=new Teacher();        wang=new Teacher();        zhang.teacherType=1;        wang.teacherType=2;        School middleschool=new School();        middleschool.setTeacher(zhang,wang);        middleschool.startMathLesson();        middleschool.startMusicLesson();      }}

School.java

public class School {    Teacher mathTeacher,musicTeacher;    void setTeacher(Teacher t1,Teacher t2){        mathTeacher=t1;        musicTeacher=t2;    }    void startMathLesson(){        mathTeacher.speak();    }    void startMusicLesson(){        musicTeacher.speak();    }}

Teacher.java

public class Teacher {    int teacherType;    public void speak(){        if(teacherType==1){            System.out.println("The topic of this class"                    + "is Math.");                    }        else if(teacherType==2){            System.out.println("The topic of this class"                    + "is Music.");                    }     }}

运行结果：

总结：掌握对象的组合及参数的传递

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