本文实例为大家分享了java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。
Student类：
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package homework032002;
import java.util.ArrayList;
public class Student { private String name; private String no; private int age; private ArrayList<Grade> Grade; public ArrayList<Grade> getCourses() { return Grade; } public void setCourses(ArrayList<Grade> Grade) { this .Grade = Grade; }
public String getName() { return name; } public void setName(String name) { this .name = name; } public String getNo() { return no; } public void setNo(String no) { this .no = no; } public int getAge() { return age; } public void setAge( int age) { this .age = age; }
@Override public String toString() { 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 = no; this .age = age; this .Grade = Grade; } public Student() { super (); // TODO Auto-generated constructor stub } } |
Function类：（功能封装在此类中）：
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package homework032002; import homework032002.Grade; import java.util.ArrayList;
public class Function { //static ArrayList<Grade> arrayList = new ArrayList<>(); //static ArrayList<Student> arrayList2 = new ArrayList<>(); private ArrayList<Student> arrayList2; public Function(ArrayList<Student> 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 : arrayList2) { if (s.getName().equals(name)) { ArrayList<Grade> course = s.getCourses(); System.out.println( "该学生的成绩是：" ); for (Grade 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）
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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：
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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" ); }} |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
原文链接：https://blog.csdn.net/Java_coder_guan/article/details/79634852