写入

public static void main(String[] args) throws FileNotFoundException, IOException {

ObjectOutputStream oos=null;

try{

//创建ObjectOutputStream输出流

oos=new ObjectOutputStream(new FileOutputStream("d:\\test\\student.txt"));

Student stu=new Student("小明",22,"男","123456");

//对象序列化，写入输出流

oos.writeObject(stu);

}catch(IOException ex){

ex.printStackTrace();

}finally{

if(oos!=null){

oos.close();

}

}

}

读出

public static void main(String[] args) throws IOException, ClassNotFoundException  {

ObjectInputStream ois=null;

try{

//创建ObjectOutputStream输出流

ois=new ObjectInputStream(new FileInputStream("d:\\test\\student.txt"));

//反序列化，强转类型

Student stu=(Student)ois.readObject();

//输出生成后对象信息

System.out.println("姓名为："+stu.getName());

System.out.println("年龄为："+stu.getAge());

System.out.println("性别为："+stu.getGender());

System.out.println("密码为："+stu.getpassword());

}catch(IOException ex){

ex.printStackTrace();

}finally{

if(ois!=null){

ois.close();

}

}

}

实体类

public class Student implements java.io.Serializable  {

private String name;

private int age;

private String gender;

//transient使password不能序列化，所以不能从输入流中读出，该属性在控制台输出是null

private transient String password;

public Student(String name, int age,String gender,String password){

System.out.println("带参数的构造方法");

this.name=name;

this.age=age;

this.gender=gender;

this.password=password;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public String getGender() {

return gender;

}

public void setGender(String gender) {

this.gender = gender;

}

public String getpassword() {

return password;

}

public void setpassword(String password) {

this.password = password;

}

}