编写一个程序，模拟学生管理系统Java

以下是一个简单的学生管理系统Java程序，实现了添加、查询和删除学生信息的功能：

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

public class StudentManagementSystem {
    static ArrayList<Student> studentList = new ArrayList<>();

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("学生管理系统");
            System.out.println("1. 添加学生信息");
            System.out.println("2. 查询学生信息");
            System.out.println("3. 删除学生信息");
            System.out.println("4. 退出");
            System.out.print("请选择操作：");

            int option = scanner.nextInt();
            switch (option) {
                case 1:
                    addStudent();
                    break;
                case 2:
                    queryStudent();
                    break;
                case 3:
                    deleteStudent();
                    break;
                case 4:
                    System.out.println("退出程序");
                    System.exit(0);
                default:
                    System.out.println("无效选项");
            }
        }
    }

    public static void addStudent() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入学生姓名：");
        String name = scanner.next();
        System.out.print("请输入学生年龄：");
        int age = scanner.nextInt();
        System.out.print("请输入学生性别：");
        String gender = scanner.next();
        System.out.print("请输入学生班级：");
        String clazz = scanner.next();
        Student student = new Student(name, age, gender, clazz);
        studentList.add(student);
        System.out.println("添加成功！");
    }

    public static void queryStudent() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入学生姓名或学号：");
        String keyword = scanner.next();
        for (Student student : studentList) {
            if (student.getName().equals(keyword) || student.getId().equals(keyword)) {
                System.out.println(student);
                return;
            }
        }
        System.out.println("未找到匹配记录");
    }

    public static void deleteStudent() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入学生姓名或学号：");
        String keyword = scanner.next();
        for (Student student : studentList) {
            if (student.getName().equals(keyword) || student.getId().equals(keyword)) {
                studentList.remove(student);
                System.out.println("删除成功！");
                return;
            }
        }
        System.out.println("未找到匹配记录");
    }
}

class Student {
    private static int idCounter = 1;
    private String id;
    private String name;
    private int age;
    private String gender;
    private String clazz;

    public Student(String name, int age, String gender, String clazz) {
        this.id = "S" + String.format("%03d", idCounter++);
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.clazz = clazz;
    }

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public String getGender() {
        return gender;
    }

    public String getClazz() {
        return clazz;
    }

    @Override
    public String toString() {
        return "学号：" + id + "，姓名：" + name + "，年龄：" + age + "，性别：" + gender + "，班级：" + clazz;
    }
}

程序使用了ArrayList来存储学生信息，通过循环遍历实现了查询和删除功能。学生类使用了静态变量idCounter来实现自增的学号。