<span style="color:#FF0000;">Seerializable接口没有任何方法，所以实现仍然为空。，他被称为标记接口</span>

package 序列化;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class ObjectSerializationApp {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ObjectOutputStream objectWriter = null;
        ObjectInputStream objectReader = null;
        try {
            objectWriter = new ObjectOutputStream(new FileOutputStream(
                    "student.dat"));
            objectWriter.writeObject(new Student(1, "John", "Mayor"));
            objectWriter.writeObject(new Student(2, "Sam", "Abel"));
            objectWriter.writeObject(new Student(3, "Anita", "Motwani"));

            System.out.println("打印出存在学生数据库中的列表");
            objectReader = new ObjectInputStream(new FileInputStream(
                    "student.dat"));
            for (int i = 0; i < 3; i++) {
    //方法readObject()返回一个Student对象，这个Student对象也通过调用隐式重写的toString()方法被打印到控制台
                System.out.println(objectReader.readObject());
            }
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        } finally {
            try {
                objectWriter.close();
                objectReader.close();
            } catch (Exception e2) {
                // TODO: handle exception
                e2.printStackTrace();

            }
        }

    }
}

// 学生类
class Student implements Serializable {

    private String firstName;
    private String lastName;
    private int id;

    public Student(int id, String firstName, String lastName) {
        // TODO Auto-generated constructor stub
        this.id = id;
        this.firstName = firstName;
        this.lastName = lastName;
    }

    // 重写toString()方法
    public String toString() {

        return ("ID:" + id + " " + firstName + " " + lastName);
    }
}