本文为大家分享了java实现学生选课系统的具体代码，供大家参考，具体内容如下

案例要求：

学生(学号，姓名，专业，所选课程{<3})

老师(工号，姓名，所教课程{<3})

课程(课程号，课程名，学分，教师，已选课学生{<30})

选课系统代码如下：

//teacher

public class Teacher {

private int id;

private String teacherName;

private Course[] courses;

//构造函数

public Teacher() {

super();

courses= new Course[3];

}

public Teacher(int id,String teacherName){

this.id=id;

this.teacherName=teacherName;

courses = new Course[3];

}

//修改或是添加属性

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getTeacherName() {

return teacherName;

}

public void setTeacherName(String teacherName) {

this.teacherName = teacherName;

}

}

/**

* 课程

*/

public class Course {

private String courseName;

private int courseId;

private Teacher teacher;

private float credit;

private Student[] students;

//构造函数

public Course(int courseId,String courseName,float credit,Teacher teacher) {

super();

this.courseId=courseId;

this.courseName=courseName;

this.credit=credit;

this.setTeacher(teacher);

students = new Student[30];

}

public Course(int courseId,String courseName,float credit) {

super();

this.courseId=courseId;

this.courseName=courseName;

this.credit=credit;

students = new Student[30];

}

public Course(int courseId,String courseName) {

super();

this.courseId=courseId;

this.courseName=courseName;

students = new Student[30];

}

public Course() {//默认形式，要有以防万一

super();

students = new Student[30];

}

//修改或获取属性值id，name，credit，

public void setId(int id){

this.courseId=id;

}

public int getId(){

return this.courseId;

}

public void setName(String name){

this.courseName=name;

}

public String getName(){

return this.courseName;

}

public void setCredit(float credit ){

this.credit=credit;

}

public float getCredit(){

return this.credit;

}

public Teacher getTeacher() {

return teacher;

}

public void setTeacher(Teacher teacher) {

this.teacher = teacher;

}

//课加入学生

public boolean addStudent(Student stu){

boolean flag = false;//标志值：是否加入成功

//如果学生没有选过这门课，同时课的学生还没满则执行

if(!isSelectedStudent(stu)&&isNullStudent(stu)){

for(int i=0;i

if(students[i]==null){

students[i]=stu;

flag=true;

break;

}

}

}

return flag;

}

//课移除学生

public boolean removeStudent(Student stu){

boolean flag=false;

if(isSelectedStudent(stu)){//选过这门课

for(int i=0;i

if(students[i]==stu){

students[i]=null;

flag=true;

break;

}

}

}

return flag;

}

//显示选择课程的学生：

public void displayStudent(){

System.out.println("选择的课程："+this.courseName+"的学生有:");

for(Student s:students){

if(s!=null){

System.out.print(s.getStuName()+" ");

}

}

System.out.println();

}

//子方法1：学生是否选过这门课

public boolean isSelectedStudent(Student stu){

boolean flag=false;

for(Student s:students){//只能用于检查，不能修改

if(s==stu){

flag=true;

break;

}

}

return flag;

}

//子方法2：学科学生未达到限定人数吗

public boolean isNullStudent(Student stu){

boolean flag=false;

for(Student s:students){

if(s==null){//还有空位

flag=true;

break;

}

}

return flag;

}

public static void main(String[] args) {

// TODO Auto-generated method stub

}

}

/**

* 学生代码

* @author Floris0811

*/

public class Student {

private String stuName;

private int stuId;

private String major;

private Course[] courses;

//构造函数

public Student() {//不要忘

super();

courses = new Course[3];

}

public Student(int stuId,String stuName) {

super();

this.stuId=stuId;

this.stuName=stuName;

courses = new Course[3];

}

public Student(int stuId,String stuName,String major) {

super();

this.stuId=stuId;

this.stuName=stuName;

this.major = major;

courses = new Course[3];

}

//修改获取属性name,id,major

public String getStuName() {

return stuName;

}

public void setStuName(String stuName) {

this.stuName = stuName;

}

public int getStuId() {

return stuId;

}

public void setStuId(int stuId) {

this.stuId = stuId;

}

public String getMajor() {

return major;

}

public void setMajor(String major) {

this.major = major;

}

//学生选课；

public boolean addCourse(Course course){

boolean flag=false;

if(!isSelectedCourse(course)&&isNullCourse(course)){

for(int i=0;i

if(courses[i]==null){

courses[i]=course;

course.addStudent(this);//课程也要添加学生

flag=true;

break;

}

}

}

return flag;

}

//学生移除课程

public boolean removeCourse(Course course){

boolean flag=false;

if(isSelectedCourse(course)){

for(int i=0;i

if(courses[i]==course){

courses[i]=null;

course.removeStudent(this);//在课程中移除学生

flag=true;

break;

}

}

}

return flag;

}

//显示学生所选的课程

public void displayCourse(){

System.out.println("学生"+this.stuName+"所选课程有：");

for(Course c:courses){

if(c!=null){

System.out.print(c.getName()+" ");

}

}

System.out.println();

}

//子方法1：课是否被选过

public boolean isSelectedCourse(Course course){

boolean flag=false;

for(Course c:courses){

if(c==course){

flag=true;

break;

}

}

return flag;

}

//子方法2：学生是否还有选修课位置

public boolean isNullCourse(Course course){

boolean flag=false;

for(Course c:courses){

if(c==null){

flag=true;

break;

}

}

return flag;

}

}

package test;

public class ChooseCourseByStu {

/**

* 选课管理系统

*/

public static void main(String[] args) {

Student stu0 = new Student(1001,"Lily");

Student stu1 = new Student(1002,"Eilly");

Student stu2 = new Student(1003,"Floris");

Student stu3 = new Student(1004,"HaHa");

Course cour0 = new Course(001,"高数");

Course cour1 = new Course(002,"线代");

Course cour2 = new Course(003,"概率论");

stu0.addCourse(cour0);

stu0.addCourse(cour2);

stu0.addCourse(cour1);

stu1.addCourse(cour2);

stu1.addCourse(cour0);

stu2.addCourse(cour1);

stu3.addCourse(cour0);

stu3.addCourse(cour1);

stu1.removeCourse(cour2);

stu0.displayCourse();

cour0.removeStudent(stu1);

cour1.displayStudent();

}

}

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