Chapter 9, Problem 2PP

Program Plan Intro

Setting Alarm

Program plan:

Filename: “Clock.java”

This code snippet creates a class “Clock”. In the code,

• Define a class “Clock”.
  • Define the class members “alarmOn”, “hour” and “minute”.
  • Define a method “setAlarm()”.
    • Set the value “hour”.
    • Set the value of “minute”.
    • Set the value of “true”.
  • Define the getter “getTime()”.
    • Get hours and minutes and set to a variable “result” as a string.
    • If “alarmOn” is true,
      • Get the hours and set to the variable “h”.
      • Get the minutes and set to the variable “m”.
      • If the condition is true,
        • Set the value of result.
        • Set “alarmOn” equal to false.
        • • Return the value of “result”.
  • Define the getter “getHours()”.
    • Declare a variable “HOUR_START”.
    • Return the hours.
  • Define the getter “getMinutes()”.
    • Declare a variable “MINUTE_START”.
    • Return the hours.
  • Define the getter “getHours()”.
    • Declare a variable “HOUR_START”.
    • Return the hours.
  • Define the method “currentTime()”.
    • Return the current time.

Filename: “ClockDemo.java”

This code snippet creates a class “ClockDemo”. In the code,

• Define a class “ClockDemo”.
  • Define the “main” method.
    • Create the object “clock” of class “Clock”.
    • Call the method “getHours()” and print the value.
    • Call the method “getMinutes()” and print the value.
    • Call the method “getTime()” and print the value.
    • Get the hours to a variable “h”.
    • Get the minutes to a variable “m”.
    • Call the method “setAlarm()”.
    • Print the time.
    • Print the time to check whether alarm is cleared.