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In: Computer Science

Write a class called Time that represents the time of the day. It has attributes for...

Write a class called Time that represents the time of the day. It has attributes for the hour and minute. The hour value ranges from 0 to 23, where the range 0 to 11 represents a time before noon. The minute value ranges from 0 to 59.

  • Write a default constructor that initializes the time to 0 hours and 0 minutes.
  • Write a private method isValid(hour, minute) that returns true if the given hour and minute values are in the appropriate range.
  • Write a method setTime(hour, minute) that sets the time if the given values are valid.
  • Write another method setTime(hour, minute, isAM) that sets the time if the given values are valid. The given hour should be in the range 1 to 12. The parameter isAM is true if the time is an a.m. time and false otherwise.
  • Add two more constructors that are similar to the setTime methods described.
  • Add a method getTime24 that returns a string that gives the time in 24 hour notation hhmm. For example,
    • If the hour value is 7 and the minute value is 25, return “’0725”.
    • If the hour value is 0 and the minute value is 5, return “0005”.
    • If the hour value is 15 and the minute value is 30, return “1530”.
  • Add a method getTime12 returns a string that gives the time in 12-hour notation h:mm xx. For example
    • If the hour value is 7 and the minute value is 25, return “’7:25 am”.
    • If the hour value is 0 and the minute value is 5, return “12:05 am”.
    • If the hour value is 15 and the minute value is 30, return “3:30 pm”.

Write a driver program to test your class and call it  testTime.. Make sure to test all the methods

Use JavaScript language

Solutions

Expert Solution

Hi,

Please find the below output with code:

<!DOCTYPE html>
<html>
<body>

    <h2>JavaScript Class Method</h2>

    <p>How to define and use a Class method.</p>
    <h1> Demo For 24 Hours Time Format</h1>
    =======================================================
    <p id="demo1"></p>
    =======================================================
    <p id="demo2"></p>
    ======================================================
    <p id="demo3"></p>
    =======================================================

    <h1> Demo For 12 Hours Time Format</h1>
    ======================================================
    <p id="demo4"></p>
    =======================================================
    <p id="demo5"></p>
    ======================================================
    <p id="demo6"></p>
    =======================================================

    <script>
        classObject = [];
        //The hour value ranges from 0 to 23
        //0 to 11 represents a time before noon
        //minute value ranges from 0 to 59

        //Class Time
        class Time {

            constructor() {
                this.hour = 0;
                this.minte = 0;
                this.isAM = false;
                classObject = this;
            }

            //Is Valid Method
            isValid(hour, minute) {
                this.hour = hour;
                this.minte = minute;

            }

            //convert time into 12 hour format
            getTime12(hour, minute) {
                var xx = "";
                //Check am and pm
                if (hour >= 1 && hour < 12) {
                    xx = " am";
                }
                else {
                    xx = " pm";
                }

                //Convert 24 hours time into 12 hours
                if (hour == 0) {
                    hour = 12;
                }
                else if (hour >= 12) {
                    hour = hour - 12;
                }

                //If minute digit is 1 i.e. < 9 then prepend 0 in the minute
                if (minute <= 9) {
                    minute = "0" + minute;
                }

                //Return contactinated hours and minute
                return hour + ":" + minute + xx;


            }

            //convert time into 24 hour format
            getTime24(hour, minute) {
                //If hour digit is single ditit the and prepend 0
                if (hour < 10) {
                    hour = "0" + hour;
                }

                //If minute digit is single digit then prepend 0
                if (minute < 10) {
                    minute = "0" + minute;
                }

                //Return contactinated hours and minute
                return hour + "" + minute;

            }


            //Set time method
            setTime(hour, minute, isAM) {
                this.hour = hour;
                this.minte = minute;
                //set am and pm
                if (hour >= 1 && hour < 12) {
                    this.isAM = true;
                }
                else {
                    this.isAM = false;
                }
            }

        }

        //instantiate Class
        let myTime = new Time();

        //declare variable
        var formateDateTime;

        //Check here 24 hours times
        formateDateTime = myTime.getTime24(7, 25);
        document.getElementById("demo1").innerHTML = "Input is - 7,25 for the 24 Hour Format is: Output is -" + formateDateTime + " ";

        formateDateTime = myTime.getTime24(0, 5);
        document.getElementById("demo2").innerHTML = "Input is - 0,5  for the 24 Hour Format is: Output is " + formateDateTime + " ";

        formateDateTime = myTime.getTime24(15, 30);
        document.getElementById("demo3").innerHTML = "Input is - 15,30  for the 24 Hour Format is: Output is " + formateDateTime + " ";

        //Check here 12 hours times
        formateDateTime = myTime.getTime12(7, 25);
        document.getElementById("demo4").innerHTML = "Input is - 7,25  for the 12 Hour Format is: Output is -" + formateDateTime + " ";

        formateDateTime = myTime.getTime12(0, 5);
        document.getElementById("demo5").innerHTML = "Input is - 0,5  for the 12 Hour Format is: Output is " + formateDateTime + " ";

        formateDateTime = myTime.getTime12(15, 30);
        document.getElementById("demo6").innerHTML = "Input is - 15,30  for the 12 Hour Format is: Output is " + formateDateTime + " ";


    </script>

</body>
</html>

Thanks.

venereology answered 1 year ago
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