import java.text.*;
import java.util.*;
public class PersonTest
{
public static void main(String[] args)
{
Person[] people=new Person[2];
people[0]=new Employee("Harry Hacker",50000,1989,10,1);
people[1]=new Student("Maria Morris","computer science");
for(Person p:people)
System.out.println(p.getName() + "," + p.getDescription());
}
}
abstract class Person
{
public Person(String n)
{
name=n;
}
public abstract String getDescription();
public String getName()
{
return name;
}
private String name;
}
class Employee extends Person
{
public Employee(String n,double s,int year,int month,int day)
{
super(n);
salary=s;
GregorianCalendar calendar=new GregorianCalendar(year,month-1,day);
hireDay=calendar.getTime();
}
public double getSalary()
{
return salary;
}
public Date getHireDay()
{
return hireDay;
}
public String getDescription()
{
return String.format("an employee with a salary of 5%.2f",salary);
}
public void raiseSalary(double byPercent)
{
double raise=salary * byPercent / 100;
salary += raise;
}
private double salary;
private Date hireDay;
}
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;
}