JAVA学生信息管理系统，使用序列化和反序列化机制

1.开始界面

public class Begin {
    
    public static void begin(){
        System.out.println("欢迎使用学生信息管理系统，请认真阅读以下使用说明：");
        System.out.println("请输入不同的功能编号来选择不同的功能：");
        System.out.println("[1]查看学生列表");
        System.out.println("[2]保存学生");
        System.out.println("[3]删除学生");
        System.out.println("[4]查看某个学生详细信息");
    }
}

2.编写学生类

import java.io.Serial;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

public class Student implements Serializable {
    @Serial
    private static final long serialVersionUID = 1L;
    private int num;
    private String name;
    private String sex;

    public Student() {
    }

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

    public int getNum(int num) {
        return num;
    }

    public String getName() {
        return name;
    }

    public String getSex() {
        return sex;
    }

    public void setNum(int num) {
        this.num = num;
    }

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

    public void setSex(String sex) {
        this.sex = sex;
    }

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

    List studentList = new ArrayList<>();
    //添加学生
    public void add(Student student){
        if (studentList.contains(student)){
            System.out.println("该学生已存在");
        }
        else {
            studentList.add(student);
        }
    }

    //查看学生列表
    public void check(){
        for (Student student:studentList){
            System.out.println(student);
        }
    }

    //删除学生
    public void delete(Student student){
        if (studentList.contains(student)){
            studentList.remove(student);
        }
        else {
            System.out.println("该学生不存在");
        }
    }
    public int getNum() {
        return num;
    }
}

3.测试

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Test {
    public static void main(String[] args) throws Exception {   //异常先不管，一次性抛出
        List studentList = new ArrayList<>();
        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("students"));
        oos.writeObject(studentList);


        while (true) {
            Student student = new Student(0,null,null);
            studentList.add(student);

            Begin.begin();//开始界面

            Scanner scanner = new Scanner(System.in);
            int choice = scanner.nextInt();

            switch (choice){
                case 1:
                    System.out.println("学生列表信息为：");
                    for (int i = 0; i < studentList.size(); i++) {
                        if (studentList.get(i).getName()!=null){
                            System.out.println(studentList.get(i));
                        }
                    }break;

                case 2:System.out.println("输入学生学生学号：");
                        student.setNum(scanner.nextInt());
                        System.out.println("请输入学生姓名：");
                        student.setName(scanner.next());
                        System.out.println("请输入学生性别：");
                        student.setSex(scanner.next());
                        System.out.println(studentList);break;

                case 3:
                    System.out.println("请输入学生学号：");
                    int num1 = scanner.nextInt();
                    for (int i = 0; i < studentList.size(); i++) {
                        if (studentList.get(i).getNum()==num1){
                            studentList.remove(i);
                            break;
                        }
                    }
                    break;

                case 4:
                    int i = 0;
                    System.out.println("请输入你要查看的学生编号：");
                    int num2 = scanner.nextInt();
                    for (i = 0; i < studentList.size(); i++) {
                        if (studentList.get(i).getNum()==num2){
                            System.out.println(studentList.get(i));
                            break;
                        }
                    }
                    if (i==studentList.size()){
                        System.out.println("没有这个人");
                    }
                    break;
            }
        }
    }
}