java控制台学生管理系统代码,用java实现学生管理系统
本文实例为大家分享了爪哇岛控制台实现学生管理系统的具体代码,供大家参考,具体内容如下
编写一个学生成绩管理程序。学生的属性包括学号、姓名、年龄等。每个学生要学习若干课程,每门课程有平时成绩、期中考试成绩、实习成绩、期末考试成绩以及总评成绩等多个成绩,其中平时成绩的数目不定(因为不同课程的教师布置的平时作业数不同),而总评成绩是其它成绩的平均值。请先设计合理的对象容器类存放这些信息,然后设计程序完成以下功能:
1)列出某个学生的所有成绩;
2)列出某门课程每个学生的总评成绩,及所有学生总评成绩的总评分;
3)分区段统计某门课程的学生总评成绩,例如60分以下的学生人数、60 至70 分的学生人数等。
学生类:
包家庭作业032002导入Java。util。ArrayList公共类学生{私有字符串名称;私有字符串编号;私人年龄;私有数组列表等级等级;public ArrayList Grade get courses(){ return Grade;} public void set课程(ArrayList Grade Grade){ this .等级=年级;} public String getName(){ return name;} public void set name(String name){ this。name=名称;} public String getNo(){ return no;} public void setNo(String no){ this。否=否;} public int getAge(){ return age;} public void setAge(int age){ this。年龄=年龄;} @将public String重写为String(){ return Student[name= name ,no= no ,age= age ,course= Grade ];} public Student(String name,String no,int age,ArrayList Grade Grade){ super();this . name=name this . no=not this . age=年龄;这个。等级=年级;}公学生(){ super();//TODO自动生成的构造函数存根} }函数类:(功能封装在此类中):
包家庭作业032002导入家庭作业032002。等级;导入Java。util。ArrayList公共类函数{//static arrayList grade arrayList=new arrayList();//静态ArrayList学生ArrayList 2=new ArrayList();私有数组列表学生数组列表2公共函数(arrayList学生arrayList){ super();this.arrayList2=arrayList} //根据名字搜索该学生的成绩public void show(String name){ for(Student s : ArrayList 2){ if(s . getname().equals(name)){ ArrayList grade course=s . get courses();System.out.println(该学生的成绩是:);对于(年级
grade : course) { System.out.println(grade); } break; } } } //列出某门课程每个学生的总评成绩,及所有学生总评成绩的总评分 public void showOneSum(String courseName) { double sumGrade = 0; int num = 0; for(Student student : arrayList2) { ArrayList<Grade> grades = student.getCourses(); for(Grade grade : grades) { if(courseName.equals(grade.getCourse())) { num++; sumGrade += grade.getSumGrade(); System.out.println(student.getName()+"的总评分是"+grade.getSumGrade()); } } } System.out.println("所有学生的总评分是:"+sumGrade/num); } //分区段统计某门课程的学生总评成绩,例如60 分以下的学生人数、60 至70 分的学生人数等 public void selectGrade(String courseName) { int down60 = 0; int down60_70 = 0; for(Student student : arrayList2) { ArrayList<Grade> grades = student.getCourses(); for(Grade grade : grades) { if(courseName.equals(grade.getCourse())) { if(grade.getSumGrade() < 60) { down60++; }else if (grade.getSumGrade() > 60 grade.getSumGrade() <70) { down60_70++; } } } } System.out.println("60分以下的有"+down60+"人"); System.out.println("60-70分以下的有"+down60_70+"人"); } }Grade类:(课程类)
package homework032002;//每门课程有平时成绩、期中考试成绩、实习成绩、期末考试成绩以及总评成绩等多个成绩public class Grade { private String course; private int dailyGrade; private int midGrade; private int doGrade; private int endGrade; public String getCourse() { return course; } public void setCourse(String course) { this.course = course; } public Grade(String course, int dailyGrade, int midGrade, int doGrade, int endGrade, double sumGrade) { super(); this.course = course; this.dailyGrade = dailyGrade; this.midGrade = midGrade; this.doGrade = doGrade; this.endGrade = endGrade; this.sumGrade = sumGrade; } public int getDailyGrade() { return dailyGrade; } public void setDailyGrade(int dailyGrade) { this.dailyGrade = dailyGrade; } private double sumGrade; public int getMidGrade() { return midGrade; } public void setMidGrade(int midGrade) { this.midGrade = midGrade; } public int getDoGrade() { return doGrade; } public void setDoGrade(int doGrade) { this.doGrade = doGrade; } public int getEndGrade() { return endGrade; } public void setEndGrade(int endGrade) { this.endGrade = endGrade; } public double getSumGrade() { return sumGrade; } public void setSumGrade(double sumGrade) { this.sumGrade = sumGrade; } @Override public String toString() { return "Grade [course=" + course + ", dailyGrade=" + dailyGrade + ", midGrade=" + midGrade + ", doGrade=" + doGrade + ", endGrade=" + endGrade + ", sumGrade=" + sumGrade + "]"; } }
测试类:
package homework032002; import java.util.ArrayList; public class Test { public static void main(String[] args) { ArrayList<Student> students = new ArrayList<>(); ArrayList<Grade> grades = new ArrayList<>(); students.add(new Student("小明", "12", 13, grades)); grades.add(new Grade("高数", 50, 95, 45, 78, 76)); grades.add(new Grade("语文", 50, 95, 45, 78, 76)); grades.add(new Grade("英语", 50, 95, 45, 78, 76)); grades.add(new Grade("计算机", 50, 95, 45, 78, 76)); ArrayList<Grade> grades1 = new ArrayList<>(); students.add(new Student("小红", "12", 13, grades1)); grades1.add(new Grade("高数", 50, 95, 45, 78, 76)); grades1.add(new Grade("语文", 50, 95, 45, 78, 76)); grades1.add(new Grade("英语", 50, 95, 45, 78, 76)); grades1.add(new Grade("计算机", 50, 95, 45, 78, 76)); ArrayList<Grade> grades2 = new ArrayList<>(); students.add(new Student("小上", "12", 13, grades2)); grades2.add(new Grade("高数", 50, 95, 45, 78, 76)); grades2.add(new Grade("语文", 50, 95, 45, 78, 76)); grades2.add(new Grade("英语", 50, 95, 45, 78, 76)); grades2.add(new Grade("计算机", 50, 95, 45, 78, 76)); ArrayList<Grade> grades3 = new ArrayList<>(); students.add(new Student("小蓝", "12", 13, grades3)); grades3.add(new Grade("高数", 50, 95, 45, 78, 76)); grades3.add(new Grade("语文", 50, 95, 45, 78, 76)); grades3.add(new Grade("英语", 50, 95, 45, 78, 76)); grades3.add(new Grade("计算机", 50, 95, 45, 78, 76)); Function function = new Function(students); function.show("小明"); function.showOneSum("计算机"); function.selectGrade("高数"); }}
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