虚拟机学生信息管理系统

以下是介绍虚拟机学生信息管理系统的回答：

虚拟机学生信息管理系统是一个用Java编写的学生信息管理系统，它提供了添加、修改、删除、访问外网、综合排名等功能，并且提供了完全的源代码和后台数据库的初始化配置。只需要安装JRE Java虚拟机就可以运行该系统。

该系统的主要功能包括：
1. 学生信息的添加、修改、删除和查看
2. 学生信息的综合排名
3. 可以访问外网

以下是一个Java实现学生信息管理系统的例子，你可以参考这个例子来实现虚拟机学生信息管理系统：

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;

public class StudentManagementSystem {
    private List<Student> students = new ArrayList<>();

    public void addStudent(Student student) {
        students.add(student);
    }

    public void removeStudent(Student student) {
        students.remove(student);
    }

    public void updateStudent(Student student) {
        for (int i = 0; i < students.size(); i++) {
            if (students.get(i).getId() == student.getId()) {
                students.set(i, student);
                break;
            }
        }
    }

    public void showStudents() {
        for (Student student : students) {
            System.out.println(student);
        }
    }

    public void sortStudents() {
        Collections.sort(students, new Comparator<Student>() {
            @Override
            public int compare(Student o1, Student o2) {
                return o1.getScore() - o2.getScore();
            }
        });
    }

    public static void main(String[] args) {
        StudentManagementSystem system = new StudentManagementSystem();
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("请选择操作：");
            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. 排序学生");
            System.out.println("6. 退出");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    System.out.println("请输入学生信息：");
                    System.out.print("学号：");
                    int id = scanner.nextInt();
                    System.out.print("姓名：");
                    String name = scanner.next();
                    System.out.print("年龄：");
                    int age = scanner.nextInt();
                    System.out.print("居住地：");
                    String address = scanner.next();
                    System.out.print("成绩：");
                    int score = scanner.nextInt();
                    Student student = new Student(id, name, age, address, score);
                    system.addStudent(student);
                    break;
                case 2:
                    System.out.println("请输入要删除的学生学号：");
                    int deleteId = scanner.nextInt();
                    for (Student s : system.students) {
                        if (s.getId() == deleteId) {
                            system.removeStudent(s);
                            break;
                        }
                    }
                    break;
                case 3:
                    System.out.println("请输入要修改的学生学号：");
                    int updateId = scanner.nextInt();
                    for (Student s : system.students) {
                        if (s.getId() == updateId) {
                            System.out.println("请输入修改后的学生信息：");
                            System.out.print("姓名：");
                            s.setName(scanner.next());
                            System.out.print("年龄：");
                            s.setAge(scanner.nextInt());
                            System.out.print("居住地：");
                            s.setAddress(scanner.next());
                            System.out.print("成绩：");
                            s.setScore(scanner.nextInt());
                            system.updateStudent(s);
                            break;
                        }
                    }
                    break;
                case 4:
                    system.showStudents();
                    break;
                case 5:
                    system.sortStudents();
                    break;
                case 6:
                    System.exit(0);
                    break;
                default:
                    System.out.println("输入有误，请重新输入！");
                    break;
            }
        }
    }
}

class Student {
    private int id;
    private String name;
    private int age;
    private String address;
    private int score;

    public Student(int id, String name, int age, String address, int score) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.address = address;
        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 String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getScore() {
        return score;
    }

    public void setScore(int score) {
        this.score = score;
    }

    @Override
    public String toString() {
        return "学号：" + id + "，姓名：" + name + "，年龄：" + age + "，居住地：" + address + "，成绩：" + score;
    }
}