java学生成绩管理系统

注：这个程序要结合下面3个类才能运行：

学生信息可以自己加

/*1．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。根据兴趣，你还可实现其它一些功能。请仔细设计和组织你的

类和使用的集合类对象。*/

package com.geminno.day730.homework12;

import java.util.ArrayList;

import java.util.List;

public class TestStudentManage {

public static void main(String[] args) {

List students= new ArrayList();//实例化对象

List courses = new ArrayList();//实例化对象

//第一个学生的信息：

Course c= new Course("Web编程", 85, 69, 70, 75, 90);

courses.add(c);

c = new Course("编程思想", 95, 78, 86, 88, 80);

courses.add(c);

c = new Course("java编程", 90, 80, 75, 88, 92);

courses.add(c);

c = new Course("数据库",93,60,55,80,56);

courses.add(c);

Student s = new Student("2012", "张三", 20, "男", "计算机", courses);

students.add(s);

//第二个学生

courses = new ArrayList();

c = new Course("Web编程", 80, 70, 50, 55, 60);

courses.add(c);

c = new Course("编程思想", 95, 77, 80, 66, 88);

courses.add(c);

c = new Course("java编程", 70, 80, 71, 82, 60);

courses.add(c);

c = new Course("数据库",60,60,55,75,70);

courses.add(c);

s = new Student("2013", "晓红", 18, "女", "计算机", courses);

students.add(s);

//第三个学生信息

courses = new ArrayList();

c = new Course("Web编程", 80, 79, 70, 75, 88);

courses.add(c);

c = new Course("编程思想", 95, 88, 56, 88, 89);

courses.add(c);

c = new Course("java编程", 90, 60, 75, 80, 92);

courses.add(c);

c = new Course("数据库",93,60,55,86,60);

courses.add(c);

s = new Student("2014", "海伦", 20, "女", "计算机", courses);

students.add(s);

StudentManage sm = new StudentManage(students);

sm.showScoreBySno("2013");

sm.showStaticsScore("数据库");

sm.showTotalScore("java编程");

}

}

学生管理类：

package com.geminno.day730.homework12;

import java.util.List;

public class StudentManage {//类

private List students;

public StudentManage(List students) {//构造函数

super();

this.students = students;

}

public void showScoreBySno(String sno){//方法

if(sno == null) return;//如果sno为空，则返回

for(Student s: students){//遍历student集合

if(s.getSno().equals(sno)){//如果得到的学号和自己选的学号相等

List courses = s.getCourses();//则得到相应的课程

for(Course c : courses){//遍历course课程集合

System.out.println(c);//输出

}

break;//跳出for循环

}

}

}

public void showTotalScore(String cname){//方法if(cname == null) return;//如果名字为空则返回

int countStudent = 0;//定义整型初始值

int totalScore = 0;//定义初始值

System.out.println("选择"+cname+"有以下学生:");

for(Student s : students){//遍历集合

List courses = s.getCourses();

for(Course c : courses){//遍历集合

if(cname.equals(c.getCname())){//如果名字和得

到的名字相同

countStudent ++;//则相应的加1

totalScore = totalScore +c.getTotalScore();

System.out.println(s.getName()+"totalScore:"+c.getTot alScore());//输出

}

}

}

System.out.println("所有学生总评成绩的总评分：

"+(totalScore / countStudent));

}

public void showStaticsScore(String cname){//方法if(cname == null) return;//如果名字为空则返回

int under60 = 0;//定义初始值

int between6070 = 0;//定义初始值

for(Student s : students){//遍历集合

List courses = s.getCourses();

for(Course c : courses){//遍历集合

if(cname.equals(c.getCname())){

if(c.getTotalScore()<60){//如果小于60

under60 ++;//则加1

}else if(c.getTotalScore()<=70){//如果在60和70之间

between6070 ++;//则加1

}

}

}

}

System.out.println("分数在60以下的："+under60);//输出

System.out.println("分数在60到70的："+between6070);

}

}

学生类：

package com.geminno.day730.homework12;

import java.util.List;

public class Student {

private String sno;

private String name;

private int age;

private String gender;

private String major;

private List courses;

public String getSno() {

return sno;

}

public void setSno(String sno) { this.sno = sno;

}

public String getName() {

return name;

}

public void setName(String name) { https://www.360docs.net/doc/5617684688.html, = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public String getGender() {

return gender;

}

public void setGender(String gender) { this.gender = gender;

}

public String getMajor() {

return major;

}

public void setMajor(String major) {

this.major = major;

}

public List getCourses() {

return courses;

}

public void setCourses(List courses) { this.courses = courses;

}

public Student(String sno, String name, int age, String gender, String major, List courses) {

super();

this.sno = sno;

https://www.360docs.net/doc/5617684688.html, = name;

this.age = age;

this.gender = gender;

this.major = major;

this.courses = courses;

}

}

课程类：

package com.geminno.day730.homework12;

public class Course {

private String cname;

private int usuallyScore;

private int middleScore;

private int praticeScore;

private int finalScore;

private int totalScore;

public String getCname() {

return cname;

}

public void setCname(String cname) {

https://www.360docs.net/doc/5617684688.html,ame = cname;

}

public int getUsuallyScore() {

return usuallyScore;

}

public void setUsuallyScore(int usuallyScore) { https://www.360docs.net/doc/5617684688.html,uallyScore = usuallyScore;

}

public int getMiddleScore() {

return middleScore;

}

public void setMiddleScore(int middleScore) { this.middleScore = middleScore;

}

public int getPraticeScore() {

return praticeScore;

}

public void setPraticeScore(int praticeScore) { this.praticeScore = praticeScore;

}

public int getFinalScore() {

return finalScore;

}

public void setFinalScore(int finalScore) { this.finalScore = finalScore;

}

public int getTotalScore() {

return totalScore;

}

public void setTotalScore(int totalScore) { this.totalScore = totalScore;

}

public Course(String cname, int usuallyScore, int middleScore, int praticeScore, int finalScore, int totalScore) {

super();

https://www.360docs.net/doc/5617684688.html,ame = cname;

https://www.360docs.net/doc/5617684688.html,uallyScore = usuallyScore;

this.middleScore = middleScore;

this.praticeScore = praticeScore;

this.finalScore = finalScore;

this.totalScore = totalScore;

}

}