/** @version 1.20 1998-09-17 @author Cay Horstmann */ import java.util.*; public class ManagerTest { public static void main(String[] args) { // construct a Manager object Manager boss = new Manager("Carl Cracker", 80000, 1987, 12, 15); boss.setBonus(5000); Employee[] staff = new Employee[3]; // fill the staff array with Manager and Employee objects staff[0] = boss; staff[1] = new Employee("Harry Hacker", 50000, 1989, 10, 1); staff[2] = new Employee("Tommy Tester", 40000, 1990, 3, 15); // 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()); } } } 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; } class Manager extends Employee { /** @param n the employee's name @param s the salary @param year the hire year @param month the hire month @param day the hire day */ public Manager(String n, double s, int year, int month, int day) { super(n, s, year, month, day); bonus = 0; } public double getSalary() { double baseSalary = super.getSalary(); return baseSalary + bonus; } public void setBonus(double b) { bonus = b; } private double bonus; }