import java.io.*;

public class StudentNode implements Serializable
{
    private StudentNode next, previous;
    private String firstName, lastName;
    private double gpa;
    
    public StudentNode(String firstName_, String lastName_, double gpa_)
    {
        firstName = firstName_;
        lastName = lastName_;
        gpa = gpa_;
    }
    
    public void setNext(StudentNode next_)
    {
        next = next_;
    }
    
    public void setPrevious(StudentNode previous_)
    {
        previous = previous_;
    }
    
    public StudentNode getNext()
    {
        return next;
    }
    
    public StudentNode getPrevious()
    {
        return previous;
    }
    
    public String firstName()
    {
        return firstName;
    }
    
    public String lastName()
    {
        return lastName;
    }
    
    public double gpa()
    {
        return gpa;
    }
    
    public String toString()
    {
        return "Student: " + firstName + " " + lastName + "\nGPA: " + gpa;
    }
}