java 学生管理系统的代码

以下是一个简单的Java学生管理系统的代码，其中包含学生类（Student）和管理系统类（StudentManagementSystem）：

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

class Student {
    private String name;
    private int id;
    private int age;
    private String gender;

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

    public String getName() {
        return name;
    }

    public int getId() {
        return id;
    }

    public int getAge() {
        return age;
    }

    public String getGender() {
        return gender;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setId(int id) {
        this.id = id;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }
}

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

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

    public void removeStudent(int id) {
        for (int i = 0; i < students.size(); i++) {
            if (students.get(i).getId() == id) {
                students.remove(i);
                break;
            }
        }
    }

    public void printStudentList() {
        System.out.println("Student List:");
        for (int i = 0; i < students.size(); i++) {
            Student student = students.get(i);
            System.out.println(student.getName() + " " + student.getId() + " " + student.getAge() + " " + student.getGender());
        }
    }
}

public class Main {
    public static void main(String[] args) {
        StudentManagementSystem sms = 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. Print student list");
            System.out.println("4. Exit");

            int choice = scanner.nextInt();

            if (choice == 1) {
                System.out.println("Enter student name:");
                String name = scanner.next();
                System.out.println("Enter student ID:");
                int id = scanner.nextInt();
                System.out.println("Enter student age:");
                int age = scanner.nextInt();
                System.out.println("Enter student gender:");
                String gender = scanner.next();
                Student student = new Student(name, id, age, gender);
                sms.addStudent(student);
            } else if (choice == 2) {
                System.out.println("Enter student ID:");
                int id = scanner.nextInt();
                sms.removeStudent(id);
            } else if (choice == 3) {
                sms.printStudentList();
            } else if (choice == 4) {
                break;
            }
        }
    }
}

这个学生管理系统可以添加学生、删除学生和打印学生列表。你可以在自己的Java环境中运行这个程序来查看效果。