学生成绩教务管理系统（学生类与学生管理类代码）

Student类：

public class Student { private int id; private String name; private int age; private double score; @Override public String toString() { return "Student{" + "id=" + id + ", name='" + name + '\'' + ", age=" + age + ", score=" + score + '}'; } public Student() { } public Student(int id, String name, int age, double score) { this.id = id; this.name = name; this.age = age; this.score = score; } public int getId() { return id; } public void setId(int id) { this.id = id; } 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 double getScore() { return score; } public void setScore(double score) { this.score = score; } } 

main函数：Studentmanagement

 import java.util.ArrayList; import java.util.List; import java.util.Scanner; public class StudentManagement { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); List<Student> list = new ArrayList<Student>(); boolean b = false; while (true){ System.out.println("*******教务管理系统*******"); System.out.println("1.添加学生"); System.out.println("2.删除学生"); System.out.println("3.修改学生"); System.out.println("4.查看学生"); System.out.println("5.退出系统"); System.out.println("请输入你的选择："); int input = scanner.nextInt(); switch (input){ case 1: addStudent(list); break; case 2: removeStudent(list); break; case 3: setStudent(list); break; case 4: getStudent(list); break; case 5: System.out.println("谢谢使用本教务系统,祝你开开心心"); b = true; scanner.close(); break; default: System.out.println("输入有误！！！请输入1-5"); break; } if (b == true){ break; } } } public static void addStudent(List<Student> list){ boolean aa = true; int id = 0; System.out.println("请输入学生的学号："); while (true){ id = new Scanner(System.in).nextInt(); for (int i = 0; i < list.size();i++){ Student student2 = list.get(i); if (id == student2.getId()){ aa = false; System.out.println("该学号已存在,请重新输入学号："); break; }else { aa = true; } } if (aa == true){ break; } } Student student = new Student(); student.setId(id); System.out.println("请输入学生的姓名："); student.setName(new Scanner(System.in).next()); System.out.println("请输入学生的年龄："); student.setAge(new Scanner(System.in).nextInt()); System.out.println("请输入学生的成绩："); student.setScore(new Scanner(System.in).nextDouble()); list.add(student); System.out.println("信息录入完毕"); } public static void removeStudent(List<Student> list){ if (list.size() == 0){ System.out.println("本系统无学生信息,录入后才能进行删除"); return; } System.out.println("请输入要删除学生的学号："); int id = 0; boolean aa = true; while (true){ id = new Scanner(System.in).nextInt(); for (int i = 0; i < list.size();i++){ Student student2 = list.get(i); if (id == student2.getId()){ aa = true; list.remove(student2); System.out.println("学号为"+id+"的学生已被移除"); break; }else { aa = false; System.out.println("该学号不存在,请重新输入学号："); } } if (aa == true){ break; } } } public static void setStudent(List<Student> list){ System.out.println("请输入要修改学生的学号："); int id = 0; boolean aa = true; while (true){ id = new Scanner(System.in).nextInt(); for (int i = 0; i < list.size();i++){ Student student = list.get(i); if (id == student.getId()){ aa = true; System.out.println("请输入学生的学号："); student.setId(new Scanner(System.in).nextInt()); System.out.println("请输入学生的姓名："); student.setName(new Scanner(System.in).next()); System.out.println("请输入学生的年龄："); student.setAge(new Scanner(System.in).nextInt()); System.out.println("请输入学生的成绩："); student.setScore(new Scanner(System.in).nextDouble()); System.out.println("该学生信息修改完成"); break; }else { aa = false; System.out.println("该学号不存在,请重新输入学号："); } } if (aa == true){ break; } } } public static void getStudent(List<Student> list){ if (list.size() == 0){ System.out.println("本系统无学生信息,请录入后在查询"); return; } System.out.println("本年级总学生人数为"+list.size()+",具体信息如下："); for (int i = 0; i < list.size();i++){ Student student = list.get(i); System.out.println(student); } } } 

本文地址：https://blog.csdn.net/Mrxuanshen/article/details/108028348