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.

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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.

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