import java.io.Serializable;

public class Person implements Serializable {
    // 原本的serialVersionUID
    private static final long serialVersionUID = 904XXXXXXXXXX662L;

    private int age;
    private String name;
    private String address;

    public Person(int age, String name, String address) {
        this.age = age;
        this.name = name;
        this.address = address;
    }

    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 String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
}

import java.io.Serializable;

public class Person implements Serializable {
    // 加上toSting函數(shù)的serialVersionUID
    private static final long serialVersionUID = 841XXXXXXXXXXXXX884L;

    private int age;
    private String name;
    private String address;

    public Person(int age, String name, String address) {
        this.age = age;
        this.name = name;
        this.address = address;
    }

    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 String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "Person{" +
                "age=" + age +
                ", name='" + name + '\'' +
                ", address='" + address + '\'' +
                '}';
    }
}

Exception in thread "main" java.io.InvalidClassException: SerializableStudy.Person; local class incompatible: stream classdesc serialVersionUID = 841XXXXXXXXXXXXX884, local class serialVersionUID = 11111111

public class SerialTest {

    public static void main(String[] args) throws IOException {
//        序列化
        Person p = new Person(0,"aaa","bbbbb");
//        指定文件生成輸出流
        FileOutputStream fos = new FileOutputStream("person.txt");
//        將對(duì)象寫出到指定的輸出流
        ObjectOutputStream oos = new ObjectOutputStream(fos);
//        將指定的對(duì)象寫入ObjectOutputStream。
        oos.writeObject(p);
//        刷新流
        oos.flush();
        oos.close();
    }
}

public class DeserialTest {
    public static void main(String[] args) throws IOException, ClassNotFoundException {
//        反序列化
//        根據(jù)指定文件生產(chǎn)輸入流
        FileInputStream fis = new FileInputStream("person.txt");
//        從指定的輸入流中讀回對(duì)象消息
        ObjectInputStream ois = new ObjectInputStream(fis);
//        從ObjectInputStream讀取一個(gè)對(duì)象
        Person p = (Person) ois.readObject();
        ois.close();
        System.out.println(p.toString());
    }
}

public class Home {
    private String home;

    public String getHome() {
        return home;
    }

    public void setHome(String home) {
        this.home = home;
    }
}

public class Person extends Home implements Serializable {
	......
}