java选课系统_java实现学生选课系统
本文為大家分享了java實現學生選課系統的具體代碼，供大家參考，具體內容如下
案例要求：
學生(學號，姓名，專業，所選課程{<3})
老師(工號，姓名，所教課程{<3})
課程(課程號，課程名，學分，教師，已選課學生{<30})
選課系統代碼如下：
//teacher
public class teacher {
private int id;
private string teachername;
private course[] courses;
//構造函數
public teacher() {
super();
courses= new course[3];
}
public teacher(int id,string teachername){
this.id=id;
this.teachername=teachername;
courses = new course[3];
}
//修改或是添加屬性
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;
}
}
/**
* 課程
*/
public class course {
private string coursename;
private int courseid;
private teacher teacher;
private float credit;
private student[] students;
//構造函數
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() {//默認形式，要有以防萬一
super();
students = new student[30];
}
//修改或獲取屬性值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;
}
//課加入學生
public boolean addstudent(student stu){
boolean flag = false;//標志值：是否加入成功
//如果學生沒有選過這門課，同時課的學生還沒滿則執行
if(!isselectedstudent(stu)&&isnullstudent(stu)){
for(int i=0;i
if(students[i]==null){
students[i]=stu;
flag=true;
break;
}
}
}
return flag;
}
//課移除學生
public boolean removestudent(student stu){
boolean flag=false;
if(isselectedstudent(stu)){//選過這門課
for(int i=0;i
if(students[i]==stu){
students[i]=null;
flag=true;
break;
}
}
}
return flag;
}
//顯示選擇課程的學生：
public void displaystudent(){
system.out.println("選擇的課程："+this.coursename+"的學生有:");
for(student s:students){
if(s!=null){
system.out.print(s.getstuname()+" ");
}
}
system.out.println();
}
//子方法1：學生是否選過這門課
public boolean isselectedstudent(student stu){
boolean flag=false;
for(student s:students){//只能用于檢查，不能修改
if(s==stu){
flag=true;
break;
}
}
return flag;
}
//子方法2：學科學生未達到限定人數嗎
public boolean isnullstudent(student stu){
boolean flag=false;
for(student s:students){
if(s==null){//還有空位
flag=true;
break;
}
}
return flag;
}
public static void main(string[] args) {
// todo auto-generated method stub
}
}
/**
* 學生代碼
* @author floris0811
*/
public class student {
private string stuname;
private int stuid;
private string major;
private course[] courses;
//構造函數
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];
}
//修改獲取屬性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;
}
//學生選課；
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);//課程也要添加學生
flag=true;
break;
}
}
}
return flag;
}
//學生移除課程
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);//在課程中移除學生
flag=true;
break;
}
}
}
return flag;
}
//顯示學生所選的課程
public void displaycourse(){
system.out.println("學生"+this.stuname+"所選課程有：");
for(course c:courses){
if(c!=null){
system.out.print(c.getname()+" ");
}
}
system.out.println();
}
//子方法1：課是否被選過
public boolean isselectedcourse(course course){
boolean flag=false;
for(course c:courses){
if(c==course){
flag=true;
break;
}
}
return flag;
}
//子方法2：學生是否還有選修課位置
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 {
/**
* 選課管理系統
*/
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,"高數");
course cour1 = new course(002,"線代");
course cour2 = new course(003,"概率論");
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();
}
}
關于管理系統的更多內容請點擊《管理系統專題》進行學習
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持萬仟網。
希望與廣大網友互動？？
點此進行留言吧！
總結
以上是生活随笔為你收集整理的java选课系统_java实现学生选课系统的全部內容，希望文章能夠幫你解決所遇到的問題。
- 上一篇： mysql 二维数组下标_php二维数组
- 下一篇： windows 下的文件对比工具