java学生成绩管理系统(2)

}

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()+\+c.getTotalScore());//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) { this.name = 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; this.name = name; this.age = age; this.gender = gender; this.major = major; this.courses = courses;