package petshop;

import java.util.Iterator;
import java.util.Set;
import java.util.List;
import java.util.ArrayList;

 class Student{
    private String name;
    private int age;
    private School school;
    private List<Course>allCourses;
    public Student(){this.allCourses=new ArrayList
 
<Course>();}
    public Student(String name,int age){this.setName(name);this.setAge(age);}

     public List<Course> getAllCourses() {
         return allCourses;
     }

     public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public
 
 void setName(String name) {
        this.name = name;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public School getSchool() {
        return school;
    }

    public void setSchool(School school) {
        this.school = school;
    }
    public String toString(){
        return
 
 "學生姓名"+this.getName()+",年齡"+this.getAge();
    }
}

 class School{
     private String name;
     private List<Student>allstudents;
     public School(){this.allstudents=new ArrayList<Student>();}
     public School(String name){
         this();
         this.setName(name);
     }

    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public List<Student> getAllstudents() {
        return allstudents;
    }
    public String toString(){
         return "學校名稱"+this.name;
    }
}
class Course{
     private String name;
     private String major;
     private List<Student>allStudents;
     public Course(){
         allStudents=new ArrayList<Student>();
     }
     public Course(String name,String major){
         this();
         this.setMajor(major);
         this.setName(name);
     }

    public String getName() {
        return name;
    }

    public List<Student> getAllStudents() {
        return allStudents;
    }

    public void setAllStudents(List<Student> allStudents) {
        this.allStudents = allStudents;
    }

    public String getMajor() {
        return major;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setMajor(String major) {
        this.major = major;
    }
    public String toString(){
         return "書籍:"+this.name+"專業:"+this.major;
    }
}
public class one {
    public static void main(String[] args) {
//          School sch=new School("江津中學");
          Student s1=new Student("鄭煜",18);
          Student s2=new Student("白刁尹",19);
          Course b1=new Course("電腦科學導論","計科");
          Course b2=new Course("C語言","計科");
//          sch.getAllstudents().add(s1);
//          sch.getAllstudents().add(s2);
//          s1.setSchool(sch);
//          s2.setSchool(sch);
          s1.getAllCourses().add(b2);
          s2.getAllCourses().add(b1);
          b1.getAllStudents().add(s2);
          b2.getAllStudents().add(s1);
        System.out.println(b1);
        Iterator<Student>me=b1.getAllStudents().iterator();
        while(me.hasNext()){
            System.out.println(me.next());
        }
        System.out.println(s1);
        Iterator<Course>iter1=s1.getAllCourses().iterator();
        while(iter1.hasNext()){
            System.out.println(iter1.next());
        }

//        System.out.println(sch);
//        Iterator<Student>iter=sch.getAllstudents().iterator();
//        while(iter.hasNext()){
//            System.out.println("\t-"+iter.next());
//        }
    }
}