Java 实现简易教务管理系统的代码

main.java

import java.util.scanner;
 
public class main {
 
	public static void main(string[] args) {
		system.out.println("\t\t简易教务管理系统");
		system.out.println("1、录入学生\t2、显示学生\t3、录入课程\t4、显示课程\t5、录入教师"
				   +"\t6、显示教师\t7、学生选课\t8、教师录入成绩\t9、教师排课\t10、授课评价\t0、退出");
		student[] students=null;	
		course courses[]=null;
		teacher teachers[]=null;
		operator operator=new operator();
		scanner scan= new scanner(system.in);	
		itcase: while (true) {
		  //显示系统主菜单
		  	system.out.print("请选择功能菜单:");
		  int choice = scan.nextint();// 接收用户的选择			
				switch(choice){
					case 1:    // 输入学生信息
						system.out.println("请输入学生数：");						
						int n = scan.nextint();
						students = new student[n];
						operator.addstudents(students);	
						break;
				 case 2:     // 显示全部学生信息
				 	operator.displaystudents(students);
						break;
				 case 3://录入课程
				 	system.out.println("请输入课程数：");
						n = scan.nextint();
						courses = new course[n];
						operator.addcourses(courses);
						break;
				 case 4: // 显示课程
				 	operator.displaycourses(courses);
						break;
					case 5: // 录入教师
						system.out.println("请输入教师数：");
						n = scan.nextint();
						teachers = new teacher[n];	
						operator.addteachers(teachers);
						break;
					case 6:// 显示教师
						operator.displayteachers(teachers);
						break;
					case 7:// 学生选课
						operator.stuselectcourses(students, courses);
						break;
					case 8:// 录入成绩
						operator.inputscores(students);
						break;
					case 9:// 教师排课
						operator.assignteachcourses(teachers, courses);
						break;
					case 10:// 授课评价
						operator.inputevaluate(teachers);
						break;
					case 0:// 退出
						break itcase;
					default:
						system.out.println("非法命令！");
				}
			} 
		}

 course.java

public class course {
	private string courseid;//课程号
	private string coursename;//课程名称
	private double credit;//学分
	
	//构造方法
	course(){
	
	}
	course(string courseid,string coursename,double credit){
		this.setcourseid(courseid);
		this.setcoursename(coursename);
		this.setcredit(credit);
	}
	public string getcourseid() {
		return courseid;
	}
	public void setcourseid(string courseid) {
		this.courseid = courseid;
	}
	public string getcoursename() {
		return coursename;
	}
	public void setcoursename(string coursename) {
		this.coursename = coursename;
	}
	public double getcredit() {
		return credit;
	}
	public void setcredit(double credit) {
		this.credit = credit;
	}
}

operator.java

import java.util.scanner;
 
public class operator {
	scanner scan;
	operator(){
		scan= new scanner(system.in);	
	}
	//录入课程
	public void addcourses(course[] courses){
		system.out.println("请输入学生信息：格式为课程号,课程名,学分");
		string str;
		string sinfor[];
		for(int i=0;i<courses.length;i++){
			str=scan.next();
			sinfor=str.split(",");
			courses[i]=new course(sinfor[0],sinfor[1],double.parsedouble(sinfor[2]));
		}
	}
	//显示所有课程
	public void displaycourses(course[] courses){
		for(int i=0;i<courses.length;i++){
			system.out.println("课程号："+courses[i].getcourseid()+",课程名："+courses[i].getcoursename()
					   +",学分："+courses[i].getcredit());
		}
	}
	//录入学生
	public void addstudents(student[] students){	
		system.out.println("请输入学生信息：格式为学号,姓名,性别,电话,地址,年龄");
		string str;
		string sinfor[];
		for(int i=0;i<students.length;i++){
			str=scan.next();
			sinfor=str.split(",");
			students[i]=new student(sinfor[0],sinfor[1],sinfor[2],sinfor[3],
					     sinfor[4],integer.parseint(sinfor[5]));
		}
	}
	
	//显示学生所有信息
	public void displaystudents(student[] students){
		for(int i=0;i<students.length;i++){
			system.out.println("学号："+students[i].getstuid()+",姓名："+students[i].getstuname()
					    +",性别："+students[i].getsex()+",电话："+students[i].gettel()
					    +",住址："+students[i].getaddress()+",年龄："+students[i].getage());
			if(students[i].selcourse!=null){
				for(int j=0;j<students[i].selcourse.length;j++){
					system.out.println("\t\t课程编号："+students[i].selcourse[j].courseid+",成绩："
			       +students[i].selcourse[j].grade);
				}
			}
		}
	}	
	
	//录入教师
	public void addteachers(teacher[] teachers){			
		system.out.println("请输入教师信息：格式为工号,姓名,性别,电话,职称,年龄");
		string str;
		string sinfor[];
		for(int i=0;i<teachers.length;i++){
			str=scan.next();
			sinfor=str.split(",");
			teachers[i]=new teacher(sinfor[0],sinfor[1],sinfor[2],sinfor[3],sinfor[4],integer.parseint(sinfor[5]));
		}
	}
	//显示教师所有信息
	public void displayteachers(teacher[] teachers){
		for(int i=0;i<teachers.length;i++){
			system.out.println("工号："+teachers[i].getteaid()+",姓名："+teachers[i].getteaname()
					 	  +",性别："+teachers[i].getsex()+",电话："+teachers[i].gettel()
		      +",职称："+teachers[i].getprofessor()+",年龄："+teachers[i].getage());
			if(teachers[i].teachcourse!=null){
				for(int j=0;j<teachers[i].teachcourse.length;j++){
					system.out.println("\t\t课程编号："+teachers[i].teachcourse[j].courseid+",授课评价："+teachers[i].teachcourse[j].evaluate);
				}
			}
		}
	}
	
	//学生选课	
	public void stuselectcourses(student[] students,course[] courses){
		system.out.println();
		system.out.println("\t课程信息系如下：");
		for(int i=0;i<courses.length;i++){
			system.out.println("课程号："+courses[i].getcourseid()+"\t"+"课程名称："
		        +courses[i].getcoursename());
		}
		system.out.println();
		system.out.println("请选择选修课程，格式为：课程号1,课程号2,......");
		for(int i=0;i<students.length;i++){
			system.out.println("学号："+students[i].getstuid()+"，姓名："
		        +students[i].getstuname()+" 选课：");
			string str=scan.next();
			string[] cids=str.split(",");
			students[i].setselcourse(cids);
		}
	}
	//教师排课	
	public void assignteachcourses(teacher[] teachers,course[] courses){
		system.out.println();
		system.out.println("\t课程信息系如下：");
		for(int i=0;i<courses.length;i++){
			system.out.println("课程号："+courses[i].getcourseid()
					    +"\t"+"课程名称："+courses[i].getcoursename());
		}
		system.out.println();
		system.out.println("请选择课程，格式为：课程号1,课程号2,......");
		for(int i=0;i<teachers.length;i++){
			system.out.println("工号："+teachers[i].getteaid()
					   +"，姓名："+teachers[i].getteaname()+" 排课：");
			string[] cids=scan.next().split(",");
			teachers[i].setteachcourse(cids);
		}
	}
	
	//教师录入成绩
	public void inputscores(student[] students){
		for(int i=0;i<students.length;i++){
			for(int j=0;j<students[i].selcourse.length;j++){
				system.out.println("请输入学号："+students[i].getstuid()
						   +",姓名："+students[i].getstuname()
						   +", 课程编号为："+students[i].selcourse[j].courseid+"的成绩：");
				students[i].selcourse[j].grade=scan.nextdouble();
			}
		}
	}
	
	//教师授课评价
	public void inputevaluate(teacher[] teachers){
		for(int i=0;i<teachers.length;i++){
			for(int j=0;j<teachers[i].teachcourse.length;j++){
				system.out.println("请输入工号："+teachers[i].getteaid()+",姓名："+teachers[i].getteaname()
						   +", 课程编号为："+teachers[i].teachcourse[j].courseid+"的授课评价：");
				teachers[i].teachcourse[j].evaluate=scan.next();
			}
		}
	}
	
	//删除某门课程
	public void delcourses(course[] courses){
		system.out.println("请输入要删除课程的编号：");
		string courseid=scan.next();
		for(int i=0;i<courses.length;i++){
			if(courses[i].getcourseid().equals(courseid)){
				courses[i]=null;
			}
		}
	}
}

student.java

public class student {
	//设置student类的属性
	private string stuid; //学号
	private string stuname; //姓名
	private string sex; //性别
	private string tel;  //电话号码
	private string address; //地址
	private int age;  //年龄
	selectcourse[] selcourse; //选修课程 
 
	//构造方法 
	student(){
		 
	}
	student(string stuid,string stuname){
		this.stuid=stuid;
		this.stuname=stuname; 
	}
	student(string stuid,string stuname,string sex,string tel,string address,int age){
		this(stuid,stuname); //this的用法
		this.sex=sex;
		this.tel=tel; 
		this.address=address; //地址
		this.age=age;  
	}
	
	public string getstuid() {
		return stuid;
	}
	public void setstuid(string stuid) {
		this.stuid = stuid;
	}
	
	//姓名属性封装
	public string getstuname() {
		return stuname;
	}
	public void setstuname(string stuname) {
		this.stuname = stuname;
	}
	
	//性别属性封装
	public string getsex() {
		return sex;
	}
	public void setsex(string sex) {
		this.sex = sex;
	}
	
	//电话属性封装
	public string gettel() {
		return tel;
	}
	public void settel(string tel) {
		this.tel = tel;
	}
	
	//地址属性封装
	public string getaddress() {
		return address;
	}
	public void setaddress(string address) {
		this.address = address;
	}
	
	//年龄属性封装
	public int getage() {
		return age;
	}
	public void setage(int age) {
		this.age = age;
	}
	
	//设置选修课程
	public void setselcourse(string[] cids) { //cids课程号数组 001,002
		selcourse=new selectcourse[cids.length];
		for(int j=0;j<cids.length;j++){
			selcourse[j]= new selectcourse(cids[j]);
		}
	}	
	//录入选修课程成绩
	public void setselcoursegrade(double[] grades) { //grades成绩数组
		for(int j=0;j<grades.length;j++){
			selcourse[j].grade= grades[j];
		}
	}	
	//计算学生各门课程的平均成绩
	double getavg(){
		double sum=0;
		for(int i=0;i<selcourse.length;i++){
			sum=sum+selcourse[i].grade;
		}
		return sum/selcourse.length;
	}
	
	//计算学生各门课程的总和
	double getsum(){
		double sum=0;
		for(int i=0;i<selcourse.length;i++){
			sum=sum+selcourse[i].grade;
		}
		return sum;
	}
	
	//内部类，用来记录选修的课程及成绩
	class selectcourse{
		string courseid;
		double grade;
		selectcourse(){
			
		}
		selectcourse(string courseid){
			this.courseid=courseid;		
		}
		selectcourse(string courseid,double grade){
			this.courseid=courseid;
			this.grade=grade;			
		}
	}
}

 teacher.java

public class teacher {
	//设置teacher类的属性
	private string teaid; //工号
	private string teaname; //姓名
	private string sex; //性别
	private string tel; //电话
	private string professor; //职称
	private int age; //年龄
	teachcourse teachcourse[]; //所授课程
	
	//构造方法 
	teacher(){
		 
	}
	teacher(string teaid,string teaname){
		this.teaid=teaid;
		this.teaname=teaname; 
	}
	teacher(string teaid,string teaname,string sex,string tel,string professor,int age){
		this(teaid,teaname); //this的用法
		this.sex=sex;
		this.tel=tel; 
		this.professor=professor; //地址
		this.age=age;  
	}
	
	//工号属性封装
	public string getteaid() {
		return teaid;
	}
	public void setteaid(string teaid) {
		this.teaid = teaid;
	}
	//姓名属性封装
	public string getteaname() {
		return teaname;
	}
	public void setteaname(string teaname) {
		this.teaname = teaname;
	}
	
	//性别属性封装
	public string getsex() {
		return sex;
	}
	public void setsex(string sex) {
		this.sex = sex;
	}
	//电话属性封装
	public string gettel() {
		return tel;
	}
	public void settel(string tel) {
		this.tel = tel;
	}
	//职称属性封装
	public string getprofessor() {
		return professor;
	}
	public void setprofessor(string professor) {
		this.professor = professor;
	}
	//年龄属性封装
	public int getage() {
		return age;
	}
	public void setage(int age) {
		this.age = age;
	}
	
	//所授课程设置
	public void setteachcourse(string[] cids) {
		teachcourse=new teachcourse[cids.length];
		for(int j=0;j<cids.length;j++){
			teachcourse[j]= new teachcourse(cids[j]);
		}
	}
	//设置所授课程评价
	public void setteachevaluate(string[] evaluates) { //grades成绩数组
		for(int j=0;j<evaluates.length;j++){
			teachcourse[j].evaluate= evaluates[j];
		}
	}	
	//内部类，教师所授课程
	class teachcourse{
		string courseid; //课程编号
		string evaluate; //课程评价
		teachcourse(string courseid){
			this.courseid=courseid;			
		}
		teachcourse(string courseid,string evaluate){
			this.courseid=courseid;
			this.evaluate=courseid;			
		}
	}
}

ps/测试数据

01,张三,男,13500043567,浙江杭州,21
02,李四,男,13099872371,浙江温州,21
03,王五,男,13790972431,浙江金华,21
04,赵六,女,13190345445,浙江台州,21
05,孙七,女,13943298712,浙江湖州,21

001,java编程,6
002,网页设计,3.5
003,appinventor,2

01,李老师,男,13500043567,讲师,39
02,杨老师,女,13099872371,讲师,38
03,高老师,女,13790972431,副教授,39
04,赵老师,男,13190345445,副教授,56
05,孙老师,女,13943298712,教授,47

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