employeetest.java

employee类

/**
   @version 1.10 1999-12-18
   @author Cay Horstmann
*/

import java.util.*;

public class EmployeeTest
{  
   public static void main(String[] args)
   {  
      // fill the staff array with three Employee objects
      Employee[] staff = new Employee[3];

      staff[0] = new Employee("Carl Cracker", 75000,
         1987, 12, 15);
      staff[1] = new Employee("Harry Hacker", 50000,
         1989, 10, 1);
      staff[2] = new Employee("Tony Tester", 40000,
         1990, 3, 15);

      // raise everyone's salary by 5%
      for (int i = 0; i < staff.length; i++)
         staff[i].raiseSalary(5);

      // print out information about all Employee objects
      for (int i = 0; i < staff.length; i++)
      {  
         Employee e = staff[i];
         System.out.println("name=" + e.getName()
            + ",salary=" + e.getSalary()
            + ",hireDay=" + e.getHireDay());
      }
   }
}

class Employee
{  
   public Employee(String n, double s, 
      int year, int month, int day)
   {  
      name = n;
      salary = s;
      GregorianCalendar calendar
         = new GregorianCalendar(year, month - 1, day);
         // GregorianCalendar uses 0 for January
      hireDay = calendar.getTime();
   }

   public String getName()
   {  
      return name;
   }

   public double getSalary()
   {  
      return salary;
   }

   public Date getHireDay()
   {  
      return hireDay;
   }

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

   private String name;
   private double salary;
   private Date hireDay;
}