import java.io.Serializable;
public class DivSort implements Serializable{
 public int age;
 public String name;
 public int score;
    public DivSort(int age, String name, int score) {
    super();
    this.age = age;
    this.name = name;
    this.score = score;
    public int getAge() {
    return age;
public void setAge(int age) {
    this.age = age;
public String getName() {
    return name;
public void setName(String name) {
    this.name = name;
public int getScore() {
    return score;
public void setScore(int score) {
    this.score = score;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
public class ArrayToByte{
    private static final long serialVersionUID = 1L;
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        // TODO Auto-generated method stub
        ArrayList<DivSort>  list1=new ArrayList<DivSort>();
        byte[] b=null;
        list1.add(new DivSort(12,"zhansan",234));
        list1.add(new DivSort(13,"zhansan",234));
        list1.add(new DivSort(14,"zhansan",234));
        for(DivSort l:list1) {
            System.out.println(l.age);
        System.out.println("start");
        b=ArrayToByte.serialize(list1);
        System.out.println(b);
        System.out.println(ArrayToByte.deserialize(b));
        list1=(ArrayList<DivSort>) ArrayToByte.deserialize(b);
        for(DivSort d:list1) {
            System.out.println(d.getAge());
     public static byte[] serialize(Object obj) throws IOException {
            try(ByteArrayOutputStream b = new ByteArrayOutputStream()){
                try(ObjectOutputStream o = new ObjectOutputStream(b)){
                    o.writeObject(obj);
                return b.toByteArray();
        public static Object deserialize(byte[] bytes) throws IOException, ClassNotFoundException {
            try(ByteArrayInputStream b = new ByteArrayInputStream(bytes)){
                try(ObjectInputStream o = new ObjectInputStream(b)){
                    return o.readObject();
2.子类实现Serializable接口，父类没有实现，子类可以序列化吗？
3.类中存在引用对象，这个类对象在什么情况下可以实现序列化？
4.同一个对象多次序列化之间有属性更新，前后的序列化有什么区别？