java实现学生管理系统(集合ArrayList实现)

以下是一个简单的Java实现学生管理系统的代码，使用ArrayList集合来存储学生信息。

import java.util.ArrayList;import java.util.Scanner;class Student {    private String name;    private int age;    private String id;    public Student(String name, int age, String id) {        this.name = name;        this.age = age;        this.id = id;    }    public String getName() {        return name;    }    public int getAge() {        return age;    }    public String getId() {        return id;    }}public class StudentManagementSystem {    private ArrayList<Student> students;    public StudentManagementSystem() {        students = new ArrayList<>();    }    public void addStudent(Student student) {        students.add(student);    }    public void removeStudent(String id) {        for (int i = 0; i < students.size(); i++) {            if (students.get(i).getId().equals(id)) {                students.remove(i);                break;            }        }    }    public void displayStudents() {        for (Student student : students) {            System.out.println("Name: " + student.getName());            System.out.println("Age: " + student.getAge());            System.out.println("ID: " + student.getId());            System.out.println("------------------------");        }    }    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 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 age: ");                    int age = scanner.nextInt();                    System.out.print("Enter student ID: ");                    String id = scanner.next();                    Student student = new Student(name, age, id);                    system.addStudent(student);                    break;                case 2:                    System.out.print("Enter student ID to remove: ");                    String removeId = scanner.next();                    system.removeStudent(removeId);                    break;                case 3:                    system.displayStudents();                    break;                case 4:                    System.exit(0);                    break;                default:                    System.out.println("Invalid choice. Please try again.");                    break;            }        }    }}

这个程序中，Student类表示学生，包含姓名、年龄和学号属性。StudentManagementSystem类表示学生管理系统，包含一个ArrayList集合来存储学生信息。

在main方法中，使用一个无限循环来接受用户的输入操作。用户可以选择添加学生、删除学生、显示学生列表或退出程序。根据用户的选择，调用StudentManagementSystem类中的相应方法来执行相应的操作。

注意：这只是一个简单的示例，没有进行输入验证和错误处理。在实际使用中，可能需要添加更多的功能和逻辑来满足实际需求。