j ava制作学生管理系统

Java可以用来制作学生管理系统，以下是一个简单的示例：

import java.util.Scanner;

public class StudentManagementSystem {
    private static final int MAX_STUDENTS = 100;
    private Student[] students;
    private int numStudents;

    public StudentManagementSystem() {
        students = new Student[MAX_STUDENTS];
        numStudents = 0;
    }

    public void addStudent(Student s) {
        if (numStudents < MAX_STUDENTS) {
            students[numStudents] = s;
            numStudents++;
            System.out.println("Student added successfully.");
        } else {
            System.out.println("Maximum number of students reached.");
        }
    }

    public void removeStudent(int id) {
        int index = findStudentIndex(id);
        if (index != -1) {
            for (int i = index; i < numStudents - 1; i++) {
                students[i] = students[i + 1];
            }
            numStudents--;
            System.out.println("Student removed successfully.");
        } else {
            System.out.println("Student not found.");
        }
    }

    public void printStudentList() {
        if (numStudents == 0) {
            System.out.println("No students in the system.");
        } else {
            System.out.println("Student list:");
            for (int i = 0; i < numStudents; i++) {
                System.out.println(students[i]);
            }
        }
    }

    private int findStudentIndex(int id) {
        for (int i = 0; i < numStudents; i++) {
            if (students[i].getId() == id) {
                return i;
            }
        }
        return -1;
    }

    public static void main(String[] args) {
        StudentManagementSystem sms = new StudentManagementSystem();
        Scanner scanner = new Scanner(System.in);
        int choice = 0;
        while (choice != 4) {
            System.out.println("1. Add student");
            System.out.println("2. Remove student");
            System.out.println("3. Print student list");
            System.out.println("4. Exit");
            System.out.print("Enter your choice: ");
            choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    System.out.print("Enter student ID: ");
                    int id = scanner.nextInt();
                    scanner.nextLine(); // consume newline
                    System.out.print("Enter student name: ");
                    String name = scanner.nextLine();
                    sms.addStudent(new Student(id, name));
                    break;
                case 2:
                    System.out.print("Enter student ID: ");
                    id = scanner.nextInt();
                    sms.removeStudent(id);
                    break;
                case 3:
                    sms.printStudentList();
                    break;
                case 4:
                    System.out.println("Exiting...");
                    break;
                default:
                    System.out.println("Invalid choice.");
            }
            System.out.println();
        }
        scanner.close();
    }
}

class Student {
    private int id;
    private String name;

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

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String toString() {
        return "ID: " + id + ", Name: " + name;
    }
}

这是一个简单的学生管理系统，可以添加、删除和打印学生列表。你可以根据自己的需求进行修改和扩展。