import java.io.Serializable;
 /**
 * <p>ClassName: Person<p>
 * <p>Description:测试对象序列化和反序列化<p>
 * 
 * @version 1.0 V
 * 
 */
 public class Person implements Serializable {
 /**
 * 序列化ID
 */
 private static final long serialVersionUID = -5809782578272943999L;
 private int age;
 private String name;
 private String sex;
 public int getAge() {
  return age;
 }
 public String getName() {
  return name;
 }
 public String getSex() {
  return sex;
 }
 public void setAge(int age) {
  this.age = age;
 }
 public void setName(String name) {
  this.name = name;
 }
 public void setSex(String sex) {
  this.sex = sex;
 }
 }

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.text.MessageFormat;
 /**
 * <p>ClassName: TestObjSerializeAndDeserialize<p>
 * <p>Description: 测试对象的序列化和反序列<p>
 * 
 * @version 1.0 V
 * 
 */
 public class TestObjSerializeAndDeserialize {
 public static void main(String[] args) throws Exception {
  SerializePerson();//序列化Person对象
  Person p = DeserializePerson();//反序列Perons对象
  System.out.println(MessageFormat.format("name={0},age={1},sex={2}",
       p.getName(), p.getAge(), p.getSex()));
 }
 /**
 * MethodName: SerializePerson 
 * Description: 序列化Person对象
 * @author xudp
 * @throws FileNotFoundException
 * @throws IOException
 */
 private static void SerializePerson() throws FileNotFoundException,
  IOException {
  Person person = new Person();
  person.setName("gacl");
 person.setAge(25);
  person.setSex("男");
  // ObjectOutputStream 对象输出流，将Person对象存储到E盘的Person.txt文件中，完成对Person对象的序列化操作
  ObjectOutputStream oo = new ObjectOutputStream(new FileOutputStream(
   new File("E:/Person.txt")));
  oo.writeObject(person);
  System.out.println("Person对象序列化成功！");
  oo.close();
 }
 /**
 * MethodName: DeserializePerson 
 * Description: 反序列Perons对象
 * 
 * @return
 * @throws Exception
 * @throws IOException
 */
 private static Person DeserializePerson() throws Exception, IOException {
  ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
   new File("E:/Person.txt")));
  Person person = (Person) ois.readObject();
  System.out.println("Person对象反序列化成功！");
  return person;
 }
 }

 private static final long serialVersionUID

private static final long serialVersionUID = 1L;

 private static final long serialVersionUID = 4603642343377807741L;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
 public class TestSerialversionUID {
 public static void main(String[] args) throws Exception {
  SerializeCustomer();// 序列化Customer对象
  Customer customer = DeserializeCustomer();// 反序列Customer对象
  System.out.println(customer);
 }
 /**
 * MethodName: SerializeCustomer 
 * Description: 序列化Customer对象
 * 
 * @throws FileNotFoundException
 * @throws IOException
 */
 private static void SerializeCustomer() throws FileNotFoundException,
  IOException {
  Customer customer = new Customer("gacl",);
  // ObjectOutputStream 对象输出流
  ObjectOutputStream oo = new ObjectOutputStream(new FileOutputStream(
   new File("E:/Customer.txt")));
  oo.writeObject(customer);
  System.out.println("Customer对象序列化成功！");
  oo.close();
 }
 /**
 * MethodName: DeserializeCustomer 
 * Description: 反序列Customer对象
 * 
 * @return
 * @throws Exception
 * @throws IOException
 */
 private static Customer DeserializeCustomer() throws Exception, IOException {
  ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
   new File("E:/Customer.txt")));
  Customer customer = (Customer) ois.readObject();
  System.out.println("Customer对象反序列化成功！");
  return customer;
 }
 }
 /**
 * <p>ClassName: Customer<p>
 * <p>Description: Customer实现了Serializable接口，可以被序列化<p>
 * 
 * @version . V
 * 
 */
 class Customer implements Serializable {
 //Customer类中没有定义serialVersionUID
 private String name;
 private int age;
 public Customer(String name, int age) {
  this.name = name;
  this.age = age;
 }
 /*
 * @MethodName toString
 * @Description 重写Object类的toString()方法
 * @author xudp
 * @return string
 * @see java.lang.Object#toString()
 */
 @Override
 public String toString() {
  return "name=" + name + ", age=" + age;
 }
 }

 class Customer implements Serializable {
 //Customer类中没有定义serialVersionUID
 private String name;
 private int age;
 //新添加的sex属性
 private String sex;
 public Customer(String name, int age) {
  this.name = name;
  this.age = age;
 }
 public Customer(String name, int age,String sex) {
  this.name = name;
  this.age = age;
  this.sex = sex;
 }
 /*
 * @MethodName toString
 * @Description 重写Object类的toString()方法
 * 
 * @return string
 * @see java.lang.Object#toString()
 */
 @Override
 public String toString() {
  return "name=" + name + ", age=" + age;
 }
 }

 Exception in thread "main" java.io.InvalidClassException: Customer; 
 local class incompatible: 
 stream classdesc serialVersionUID = -88175599799432325, 
 local class serialVersionUID = -5182532647273106745

 class Customer implements Serializable {
  /**
  * Customer类中定义的serialVersionUID(序列化版本号)
  */
  private static final long serialVersionUID = -L;
  private String name;
  private int age;
  //新添加的sex属性
  //private String sex;
  public Customer(String name, int age) {
   this.name = name;
   this.age = age;
  }
  /*public Customer(String name, int age,String sex) {
   this.name = name;
   this.age = age;
   this.sex = sex;
  }*/
  /*
  * @MethodName toString
  * @Description 重写Object类的toString()方法
  * @author xudp
  * @return string
  * @see java.lang.Object#toString()
  */
  @Override
  public String toString() {
   return "name=" + name + ", age=" + age;
  }
 }

class Customer implements Serializable {
  /**
  * Customer类中定义的serialVersionUID(序列化版本号)
  */
  private static final long serialVersionUID = -5182532647273106745L;
  private String name;
  private int age;
  //新添加的sex属性
  private String sex;
  public Customer(String name, int age) {
   this.name = name;
   this.age = age;
  }
  public Customer(String name, int age,String sex) {
   this.name = name;
   this.age = age;
   this.sex = sex;
  }
  /*
  * @MethodName toString
  * @Description 重写Object类的toString()方法
  * 
  * @return string
  * @see java.lang.Object#toString()
  */
  @Override
  public String toString() {
   return "name=" + name + ", age=" + age;
  }
 }