Chapter 9, Problem 3PP

Program Plan Intro

Evaluation of Appointment

Program plan:

Filename: “Appointment.java”

This program file is used to define a class “Appointment”. In the code,

• Define a class “Appointment”.
  • Define the class member “description”.
  • Define the constructor “Appointment()”.
    • initialize the value of “description”.
  • Define the method “setDescription()”.
    • Set the value of “description”.
  • Declare an abstract method “occursOn()”.
  • Define the method “toString()”.
    • Return the value of “description”.

Filename: “Monthly.java”

This program file is used to define a class “Monthly”. In the code,

• Define a class “Monthly”.
  • Define the constructor “Monthly”.
    • Call the method “setDescription()”.
  • Define the method “occursOn()”.
    • Return the value “true”.

Filename: “Onetime.java”

This program file is used to define a class “Onetime”. In the code,

• Define a class “Onetime”.
  • Define the constructor “Onetime”.
    • Call the method “setDescription()”.
    • Set the values of class members.
  • Define the method “occursOn()”.
    • Return the value “true”.

Filename: “Daily.java”

This program file is used to define a class “Daily”. In the code,

• Define a class “Daily”.
  • Define the constructor “Daily”.
    • Call the method “setDescription()”.
  • Define the method “occursOn()”.
    • Return the value “true”.

Filename: “AppointmentTester.java”

This program file is used to define a class “AppointmentTester”. In the code,

• Define a class “AppointmentTester”.
  • Define the method “main()”.
    • Print “Monthly is subclass of Appointment”.
    • Get the super class of “Monthly” and using “==” operator, check whether it matches with class “Appointment”.
    • Print the expected result.
    • Print “Onetime is subclass of Appointment”.
    • Get the super class of “Onetime” and using “==” operator, check whether it matches with class “Appointment”.
    • Print the expected result.
    • Print “Daily is subclass of Appointment”.
    • Get the super class of “Daily” and using “==” operator, check whether it matches with class “Appointment”.
    • Print the expected result.
    • Print the statement “Monthly appointments have no extra fields:”.
    • Get the length of declared fields of class “Monthly” and check whether it is equal to 1.
    • Print the expected result.
    • Print the statement “Onetime appointments have no extra fields:”.
    • Get the length of declared fields of class “Onetime” and check whether it is equal to 3.
    • Print the expected result.
    • Print the statement “Daily appointments have no extra fields:”.
    • Get the length of declared fields of class “Daily” and check whether it is equal to 0.
    • Print the expected result.
    • Define the object of class “Monthly”.
    • Check the daily appointment of “obj”.
    • Print the expected appointment.
    • Print the date of appointment.
    • Print the expected value.
    • Define the object of class “Onetime”.
    • Check the daily appointment of “obj”.
    • Print the expected appointment.
    • Print the date of appointment.
    • Print the expected value.
    • Define the object of class “Daily”.
    • Check the daily appointment of “obj”.
    • Print the expected appointment.
    • Print the date of appointment.
    • Print the expected value.