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：
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//teacherpublic 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; }} |
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/** * 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<students.length;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<students.length;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 }} |
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/** * 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<this.courses.length;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<this.courses.length;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; }} |
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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(); }} |
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服務器之家。
原文鏈接：https://blog.csdn.net/Floris_lovelace/article/details/80860470
