程序功能：编写SerializationTest.java和DeserializationTest.java程序，利用ObjectOutputStream将 student 类的实例对象信息保持到 E:\IOTest\objectSeri.dat 文件，再利用ObjectInputStream将文件中的对象信息显示出来。

好的，我理解了你的要求。下面是实现这个程序的代码：

首先是 `Student` 类的定义：

import java.io.Serializable;

public class Student implements Serializable {
    private String name;
    private int age;
    private String gender;

    public Student(String name, int age, String gender) {
        this.name = name;
        this.age = age;
        this.gender = gender;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public String getGender() {
        return gender;
    }

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

然后是 `SerializationTest` 类，用于将 `Student` 对象序列化并写入文件：

import java.io.*;

public class SerializationTest {
    public static void main(String[] args) {
        Student student = new Student("张三", 18, "男");
        File file = new File("E:/IOTest/objectSeri.dat");
        try (OutputStream outputStream = new FileOutputStream(file);
             ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream)) {
            objectOutputStream.writeObject(student);
            System.out.println("序列化成功！");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

最后是 `DeserializationTest` 类，用于从文件中读取并反序列化 `Student` 对象：

import java.io.*;

public class DeserializationTest {
    public static void main(String[] args) {
        File file = new File("E:/IOTest/objectSeri.dat");
        try (InputStream inputStream = new FileInputStream(file);
             ObjectInputStream objectInputStream = new ObjectInputStream(inputStream)) {
            Object object = objectInputStream.readObject();
            if (object instanceof Student) {
                Student student = (Student) object;
                System.out.println(student.toString());
            }
        } catch (IOException | ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
}

注意，在序列化和反序列化过程中，要使用相同的文件和流对象，否则会导致读取失败。

希望这个程序能够满足你的需求。如果有任何问题，欢迎随时提出。