Chapter 25, Problem 12PP

Program Plan Intro

  To design an XML format for the appointments in an appointment calendar

Program plan:

• In the file “AppointmentDate.java”, import necessary package, and create a class “AppointmentDate”,
  • Declare necessary variables.
  • Define the constructor.
  • Define the method “equals()” to determine if the dates are equal.
  • Define the method “toString()” to print a string representation of the date.
• In the file “AppointmentTime.java”, import necessary package, and create a class “AppointmentTime”,
  • Declare necessary variables.
  • Define the constructor.
  • Define the method “hashCode()” to get the hash code..
  • Define the method “equals()” to determine if the appointment times are equal.
  • Define the method “toString()” to print a string representation of the time.
• In the file “AppointmentCalendar.java”, import necessary package, and create a class “AppointmentCalendar”,
  • Declare an array list.
  • Define the constructor.
  • Define the method “add()” to add an appointment to the calendar.
  • Define the method “cancel()” to cancel an appointment from the calendar.
  • Define the method “getAppointmentsForDay()” to get all appointments for a certain date.
  • Define the method “getAllAppointments()” to get all appointments.
• In the file “Appointment.java”, import necessary package, and create a class “Appointment”,
  • Declare necessary variables.
  • Define the constructor.
  • Define the method “equals()” to determine if the appointment is the same as another appointment.
  • Define the method “hashCode()” to get the hash code.
  • Define the method “fallsOn()” to determine if an appointment falls on a certain day.
  • Define the method “format()” to format the appointment.
  • Define the method “getDescription()” to get the description.
  • Define the method “getDay()” of type “AppointmentDate” to get the day.
  • Define the method “getFrom()” of type “AppointmentTime” to get the "from" time.
  • Define the method “getTo()” of type “AppointmentTime” to get the "to" time.
• In the file “AppointmentParser.java”, import necessary packages, and create a class “AppointmentParser”,
  • Declare necessary variables.
  • Define the constructor.
  • Define the method “parseCalendar()” to parse an “AppointmentCalendar” from the given file.
  • Define the method “parseCommands()” to write an AppointmentCalendar to the given file.
• In the file “AppointmentSystem.java”, import necessary packages, and create a class “AppointmentSystem”,
  • Define the method “main()”,
    • If the arguments length is less than “2”.
      • Print the message.
    • Create required file objects.
    • Execute “try” statement.
      • Create an object for “AppointmentParser”.
      • Parse calendar from file.
      • Call the method to parse and run commands from file.
      • Call the method to write the calendar.
    • Catch and handle “XPathExpressionException” exception.
    • Catch and handle “ParserConfigurationException” exception.
    • Catch and handle “TransformerConfigurationException” exception.
    • Catch and handle “TransformerException” exception.
    • Catch and handle “SAXException” exception.
    • Catch and handle “IOException” exception.