import java.text.*;

public class PersonTest
{
  public static void main(String[] args)
  {
    Person[] people = new Person[2];
    people[0]=new Employee("Harry Hacker",50000);
    people[1]= new Student("Maria Morris","computer science");
    for(int i=0;i<people.length;i++)
    {
      Person p=people[i];
      System.out.println(p.getName() +","+p.getDesctiption());
    }
  }
}

abstract class Person
{
  private String name;
  public Person(String n)
  {
    name=n;
  }
  public abstract String getDesctiption();
  public String getName()
  {
    return name;
  }

}

class Employee extends Person
{
  private double salary;
  public Employee(String n,double s)
  {
    super(n);
    salary=s;
  }
  public double getSalary()
  {
    return salary;
  }
  public String getDescription()
  {
    NumberFormat formatter= NumberFormat.getCurrencyInstance();
    return "an employee with a salary of "+ formatter.format(salary);
  }

  public void raiseSalary(double byPercent)
  {
    double raise = salary * byPercent / 100;
    salary +=raise;
  } 
}

class Student extends Person
{
  public Student(String n,String m)
  {
    super(n);
    major=m;
  }
  public String getDescription()
  {
    return "a student majoring in" + major;
  }
  private String major;
}