Here is a class the does the writing, but i am getting exceptions saying
its not serialized.etc.

import java.io.*;

public class WriteStudentData {

    /** Creates a new instance of WriteStudentData */
    public WriteStudentData() {
    }

    // method will take the student list and save it to student.dat file.
    public void save(Student[] student)
    {
        try {
            ObjectOutputStream objOut = new ObjectOutputStream(new
FileOutputStream("student.dat"));
            objOut.writeObject(student);
            objOut.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }

    }
}