java做一个学生管理系统

Java可以用来开发学生管理系统，以下是一个简单的示例：

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

public class StudentManagementSystem {
    private List<Student> students;

    public StudentManagementSystem() {
        students = new ArrayList<>();
    }

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

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

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

    public static void main(String[] args) {
        StudentManagementSystem system = new StudentManagementSystem();
        Scanner scanner = new Scanner(System.in);

        while (true) {
            System.out.println("1. Add student");
            System.out.println("2. Remove student");
            System.out.println("3. Display all students");            System.out.println("4. Exit");
            System.out.print("Enter your choice: ");
            int choice = scanner.nextInt();

            switch (choice) {
                case 1:
                    System.out.print("Enter student name: ");
                    String name = scanner.next();
                    System.out.print("Enter student ID: ");
                    int id = scanner.nextInt();
                    Student student = new Student(name, id);
                    system.addStudent(student);
                    System.out.println("Student added successfully!");
                    break;
                case 2:
                    System.out.print("Enter student ID to remove: ");
                    int removeId = scanner.nextInt();
                    Student removeStudent = null;
                    for (Student s : system.students) {
                        if (s.getId() == removeId) {
                            removeStudent = s;
                            break;
                        }
                    }
                    if (removeStudent != null) {
                        system.removeStudent(removeStudent);
                        System.out.println("Student removed successfully!");
                    } else {
                        System.out.println("Student not found!");
                    }
                    break;
                case 3:
                    system.displayAllStudents();
                    break;
                case 4:
                    System.exit(0);
                    break;
                default:
                    System.out.println("Invalid choice!");
            }
        }
    }
}

class Student {
    private String name;
    private int id;

    public Student(String name, int id) {
        this.name = name;
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public int getId() {
        return id;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", id=" + id +
                '}';
    }
}

这个学生管理系统使用了Java的面向对象编程思想，通过一个`StudentManagementSystem`类来管理学生对象。你可以通过选择菜单选项来添加学生、删除学生和显示所有学生。每个学生对象包含姓名和学号。