AppointmentDemo.java import java.util.Scanner; /** Demonstration of the appointment classes */ public class AppointmentDemo { public static void main(String[] args) { Appointment[] appointments = new Appointment[4]; appointments[0] = new Daily(\"Brush your teeth.\"); appointments[1] = new Monthly(1, \"Visit grandma.\"); appointments[2] = new Onetime(2015, 11, 1, \"Dentist appointment.\"); appointments[3] = new Onetime(2015, 10, 31, \"Trick or Treat.\"); Scanner in = new Scanner(System.in); int year = in.nextInt(); int month = in.nextInt(); int day = in.nextInt(); for (Appointment a : appointments) { if (a.occursOn(year, month, day)) { System.out.println(a); } } } } Appointment.java /** A class to keep track of an appointment. */ public abstract class Appointment { private String description; /** Constructs an appointment without a description. */ public Appointment() { description = \"\"; } /** Sets the description of this appointment. */ public void setDescription(String description) { this.description = description; } /** Determines if this appointment occurs on the given date. */ public abstract boolean occursOn(int year, int month, int day); /** Converts appointment to string description. */ public String toString() { return description; } } Daily.java public class Daily extends Appointment { public Daily (String description) { setDescription(description); } public boolean occursOn(int year, int month, int day) { return true; } } Onetime.java public class Onetime extends Appointment { private int monthApp; private int yearApp; private int dayApp; public Onetime(int yearAppInput, int monthAppInput, int dayAppInput, String description) { yearApp = yearAppInput; monthApp = monthAppInput; dayApp = dayAppInput; setDescription(description); } public boolean occursOn(int year, int month, int day) { if ((year == yearApp) && (month == monthApp) && (day == dayApp)) { return true; } else { return false; } } } Monthly.java public class Monthly extends Appointment { private int dayApp; public Monthly (int dayAppInput, String description) { dayApp = dayAppInput; setDescription(description); } public boolean occursOn(int year, int month, int day) { if (day == dayApp) { return true; } else { return false; } } } Solution AppointmentDemo.java import java.util.Scanner; /** Demonstration of the appointment classes */ public class AppointmentDemo { public static void main(String[] args) { Appointment[] appointments = new Appointment[4]; appointments[0] = new Daily(\"Brush your teeth.\"); appointments[1] = new Monthly(1, \"Visit grandma.\"); appointments[2] = new Onetime(2015, 11, 1, \"Dentist appointment.\"); appointments[3] = new Onetime(2015, 10, 31, \"Trick or Treat.\"); Scanner in = new Scanner(System.in); int year = in.nextInt(); int month = in.nextInt(); int day = in.nextInt(); for (Appointment a : appointments) { if (a.occursOn(year, month, day)) { System.out.println(a); } } } } Appointment.java /** A class to keep track of an appointment. */ public ab.

1. AppointmentDemo.java
import java.util.Scanner;
/**
Demonstration of the appointment classes
*/
public class AppointmentDemo
{
public static void main(String[] args)
{
Appointment[] appointments = new Appointment[4];
appointments[0] = new Daily("Brush your teeth.");
appointments[1] = new Monthly(1, "Visit grandma.");
appointments[2] = new Onetime(2015, 11, 1, "Dentist appointment.");
appointments[3] = new Onetime(2015, 10, 31, "Trick or Treat.");
Scanner in = new Scanner(System.in);
int year = in.nextInt();
int month = in.nextInt();
int day = in.nextInt();
for (Appointment a : appointments)
{
if (a.occursOn(year, month, day))
{
System.out.println(a);
}
}
}
}
Appointment.java
/**
A class to keep track of an appointment.
*/
public abstract class Appointment
{
private String description;
/**

2. Constructs an appointment without a description.
*/
public Appointment()
{
description = "";
}
/**
Sets the description of this appointment.
*/
public void setDescription(String description)
{
this.description = description;
}
/**
Determines if this appointment occurs on the given date.
*/
public abstract boolean occursOn(int year, int month, int day);
/**
Converts appointment to string description.
*/
public String toString()
{
return description;
}
}
Daily.java
public class Daily extends Appointment
{
public Daily (String description)
{
setDescription(description);
}
public boolean occursOn(int year, int month, int day)
{

3. return true;
}
}
Onetime.java
public class Onetime extends Appointment
{
private int monthApp;
private int yearApp;
private int dayApp;
public Onetime(int yearAppInput, int monthAppInput, int dayAppInput, String description)
{
yearApp = yearAppInput;
monthApp = monthAppInput;
dayApp = dayAppInput;
setDescription(description);
}
public boolean occursOn(int year, int month, int day)
{
if ((year == yearApp) && (month == monthApp) && (day == dayApp))
{
return true;
}
else
{
return false;
}
}
}
Monthly.java
public class Monthly extends Appointment
{
private int dayApp;
public Monthly (int dayAppInput, String description)
{

4. dayApp = dayAppInput;
setDescription(description);
}
public boolean occursOn(int year, int month, int day)
{
if (day == dayApp)
{
return true;
}
else
{
return false;
}
}
}
Solution
AppointmentDemo.java
import java.util.Scanner;
/**
Demonstration of the appointment classes
*/
public class AppointmentDemo
{
public static void main(String[] args)
{
Appointment[] appointments = new Appointment[4];
appointments[0] = new Daily("Brush your teeth.");
appointments[1] = new Monthly(1, "Visit grandma.");
appointments[2] = new Onetime(2015, 11, 1, "Dentist appointment.");
appointments[3] = new Onetime(2015, 10, 31, "Trick or Treat.");
Scanner in = new Scanner(System.in);
int year = in.nextInt();
int month = in.nextInt();

5. int day = in.nextInt();
for (Appointment a : appointments)
{
if (a.occursOn(year, month, day))
{
System.out.println(a);
}
}
}
}
Appointment.java
/**
A class to keep track of an appointment.
*/
public abstract class Appointment
{
private String description;
/**
Constructs an appointment without a description.
*/
public Appointment()
{
description = "";
}
/**
Sets the description of this appointment.
*/
public void setDescription(String description)
{
this.description = description;
}
/**
Determines if this appointment occurs on the given date.
*/
public abstract boolean occursOn(int year, int month, int day);
/**

6. Converts appointment to string description.
*/
public String toString()
{
return description;
}
}
Daily.java
public class Daily extends Appointment
{
public Daily (String description)
{
setDescription(description);
}
public boolean occursOn(int year, int month, int day)
{
return true;
}
}
Onetime.java
public class Onetime extends Appointment
{
private int monthApp;
private int yearApp;
private int dayApp;
public Onetime(int yearAppInput, int monthAppInput, int dayAppInput, String description)
{
yearApp = yearAppInput;
monthApp = monthAppInput;
dayApp = dayAppInput;
setDescription(description);
}
public boolean occursOn(int year, int month, int day)

7. {
if ((year == yearApp) && (month == monthApp) && (day == dayApp))
{
return true;
}
else
{
return false;
}
}
}
Monthly.java
public class Monthly extends Appointment
{
private int dayApp;
public Monthly (int dayAppInput, String description)
{
dayApp = dayAppInput;
setDescription(description);
}
public boolean occursOn(int year, int month, int day)
{
if (day == dayApp)
{
return true;
}
else
{
return false;
}
}
}