静态成员变量能不能被序列化？？？？

程序如下：

import java.io.*;
class Student implements Serializable
{
private String name;
private transient String password;
private static int count=0;

public Student(String name,String password)
{
System.out.println("调用Student的带参的构造方法");
this.name=name;
this.password=password;
count++;
}
public String toString()
{
return "人数: "+count+" 姓名: "+name+" 密码: "+password;
}
}
public class ObjectSerTest1
{
public static void main(String args[])
{
try{

FileOutputStream fos=new FileOutputStream("test.obj");
ObjectOutputStream oos=new ObjectOutputStream(fos);

Student s1=new Student("张三","12345");
Student s2=new Student("王五","54321");


oos.writeObject(s1);
oos.writeObject(s2);

oos.close();

FileInputStream fis=new FileInputStream("test.obj");
ObjectInputStream ois=new ObjectInputStream(fis);


Student s3=(Student)ois.readObject();
Student s4=(Student)ois.readObject();


System.out.println(s3);
System.out.println(s4);


ois.close();
}
catch(IOException e)
{
e.printStackTrace();
}
catch(ClassNotFoundException e1)
{
e1.printStackTrace();
}
}
}

count为Student的静态成员变量，书上说静态成员不能被序列化，那为什么此程序运行的结果：输出s3和s4时 count为2呢，按理说应该为0才对啊？还是我哪里理解错了，请高手指定，谢谢了