源码分析
Course.java
- package com.ftl.many2many;
- import java.util.*;
- public class Course
- {
- private int credit;
- private String name;
- private List<Student> allStudent;
- public int getCredit()
- {
- return credit;
- }
- public void setCredit(int credit)
- {
- this.credit = credit;
- }
- public String getName()
- {
- return name;
- }
- public void setName(String name)
- {
- this.name = name;
- }
- public List<Student> getAllStudent()
- {
- return allStudent;
- }
- public void setAllStudent(List<Student> allStudent)
- {
- this.allStudent = allStudent;
- }
- public Course()
- {
- this.allStudent = new ArrayList<Student>();
- }
- public Course(String name, int credit)
- {
- this();
- this.setCredit(credit);
- this.setName(name);
- }
- public String toString()
- {
- return "课程名称:" + this.name + "\t 课程学分:" + this.credit;
- }
- }
- View Code
- School.java
- package com.ftl.many2many;
- import java.io.*;
- import java.util.*;
- public class School
- {
- private String name;
- private List<Student> allStudent;
- public School()
- {
- this.allStudent = new ArrayList<Student>();
- }
- public School(String name)
- {
- this();
- this.name = name;
- }
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public List<Student> getAllStudent() {
- return allStudent;
- }
- public void setAllStudent(List<Student> allStudent) {
- this.allStudent = allStudent;
- }
- public String toString()
- {
- return "学校姓名" + this.name;
- }
- }
- View Code
- Student.java
- package com.ftl.many2many;
- import java.util.*;
- public class Student
- {
- private int age;
- private String name;
- private School school;
- private List<Course> allCourse;
- public Student()
- {
- this.allCourse = new ArrayList<Course>();
- }
- public Student(String name, int age)
- {
- this();
- this.setName(name);
- this.setAge(age);
- }
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public School getSchool() {
- return school;
- }
- public void setSchool(School school) {
- this.school = school;
- }
- public int getAge() {
- return age;
- }
- public void setAge(int age) {
- this.age = age;
- }
- public List<Course> getAllCourse() {
- return allCourse;
- }
- public void setAllCourse(List<Course> allCourse) {
- this.allCourse = allCourse;
- }
- public String toString()
- {
- return "学生姓名:" + this.name + "\t 年龄:" + this.age;
- }
- }
- View Code
- testDemo.java
- package com.ftl.many2many;
- import java.util.Iterator;
- public class testDemo
- {
- public static void main(String[] args)
- {
- School sch = new School("海风大学");
- Student s1 = new Student("张三", 12);
- Student s2 = new Student("赵四", 22);
- Student s3 = new Student("张 5", 11);
- Course c1 = new Course("计算机", 3);
- Course c2 = new Course("语文", 1);
- Course c3 = new Course("数学", 2);
- //3 个学生一个学校
- s1.setSchool(sch);
- s2.setSchool(sch);
- s3.setSchool(sch);
- // 一个学校 3 个学生
- sch.getAllStudent().add(s1);
- sch.getAllStudent().add(s2);
- sch.getAllStudent().add(s3);
- // 第一门课 3 个 xues
- c1.getAllStudent().add(s3);
- c1.getAllStudent().add(s2);
- c1.getAllStudent().add(s1);
- s2.getAllCourse().add(c2);
- s1.getAllCourse().add(c1);
- s3.getAllCourse().add(c3);
- // 第二门一个学生
- c2.getAllStudent().add(s3);
- s3.getAllCourse().add(c2);
- c3.getAllStudent().add(s3);
- s3.getAllCourse().add(c3);
- // 输出一门课信息, 观察一门课多少学生:
- System.out.println(c1);
- Iterator<Student> iter = null;
- iter = c1.getAllStudent().iterator();
- System.out.println("C1 选课情况 :");
- while(iter.hasNext())
- {
- Student c = iter.next();
- System.out.println("\t|-" + c);
- }
- System.out.println("----------------------------");
- System.out.println("学校学生情况:");
- iter = sch.getAllStudent().iterator();
- while(iter.hasNext())
- {
- Student stu = (Student) iter.next();
- System.out.println("\t|-" + stu);
- }
- System.out.println("----------------------------");
- // 张 5 的选课情况:
- System.out.println("学生张武选课情况:");
- System.out.println(s3);
- Iterator<Course> it = s3.getAllCourse().iterator();
- while(it.hasNext())
- {
- Course c = it.next();
- System.out.println("\t|-" + c);
- }
- }
- }
- View Code
源码下载
点击下载 https://files.cnblogs.com/files/ftl1012/简单的上课管理系统.rar
来源: http://www.bubuko.com/infodetail-2696310.html