序列化和反序列化--java实现

//1
package com.example.sei;

import java.io.*;

public class TestStudent {
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        //实例化student对象
//        Student student = new Student("张三", 18);
//        System.out.println(student.name+ " " + student.age);
//
//
//
//        //java序列化：把对象保存到第一个文件中
//        //1.让这个类实现Serializable接口
//        //2.创建一个输出流
//      ObjectOutputStream oos=  new ObjectOutputStream(new FileOutputStream("student_java.ser"));
//      //3.把对象写入到文件中
//      oos.writeObject(student);
      关闭
//      oos.close();


      //Java反序列化：从文件student_java.ser中读出内容，还原这个对象
        ObjectInputStream ois = new ObjectInputStream(new FileInputStream("student_java.ser"));
        Student student=(Student)ois.readObject();
        System.out.println(student.name+ " " + student.age);
    }
}

//2

package com.example.sei;

import java.io.Serializable;

//学生类，姓名，年龄
//Serializable
public class Student implements Serializable {
     String name;
     int age;
    public Student(String name, int age) {
        this.name = name;
        this.age = age;

    }
}