Exercise 9.8

//Person Superclass
public class Person
{
    public String name;
    public int yearOfBirth;

    public Person (String personName, int personYearOfBirth)
    {
        name = personName;
        yearOfBirth = personYearOfBirth;
    }

    public String toString()
    {
        String dob = Integer.toString(yearOfBirth);
        return name;
    }
}

//Instructor subclass
public class Instructor extends Person
{
    public double salary;

    public Instructor (String personName, int personYearOfBirth)
    {
        super(personName, personYearOfBirth);
    }

    public void setSalary(int personSalary)
    {
        salary = personSalary;
    }
}

//Student subclass
public class Student extends Person
{
    public String major;

    public Student(String personName, int personYearOfBirth)
    {
        super(personName, personYearOfBirth);
    }

    public void setMajor(String personMajor)
    {
        major = personMajor;
    }
}