Question

Create an ElapsedTimeCalculator application that prompts the user for a starting hour, whether it is am or pm, and the number of elapsed hours. The application then displays the time after that many hours have passed. (Java)

Answer 1

/*********************************ElapsedTimeCalculator.java*********************************/

import java.util.Scanner;

public class ElapsedTimeCalculator {

   public static void main(String[] args) {

       Scanner scan = new Scanner(System.in);
       System.out.println("Enter the starting hour: ");
       int startHour = scan.nextInt();
       System.out.println("AM or PM?");
       String amOrPm = scan.next();
       System.out.println("How many hour elapsed: ");
       int elapsedHour = scan.nextInt();
       if (elapsedHour>12&&elapsedHour<24&&amOrPm.equalsIgnoreCase("AM")) {
          
           amOrPm = "PM";
           elapsedHour = elapsedHour%12;
       }
       else if (elapsedHour>12&&elapsedHour<24&&amOrPm.equalsIgnoreCase("PM")) {
          
           amOrPm = "AM";
           elapsedHour = elapsedHour%12;
       }
       else if (elapsedHour>24) {
      
           elapsedHour = elapsedHour%12;
       }

       //condition check for valid time
       if (startHour / 12 <= 1 && amOrPm.equalsIgnoreCase("AM")) {
           //condition if total time is greater than 12
           if ((startHour + elapsedHour) / 12 < 1 && startHour != 12) {

               System.out.println("Time is: " + (startHour + elapsedHour) + "AM");
           } else if (startHour == 12 && (startHour + elapsedHour) / 12 < 2) {
               System.out.println("Time is: " + (elapsedHour) + "AM");
           } else {
               System.out.println("Time is: " + Math.abs((12 - (elapsedHour + startHour))) + "PM");
           }
       } else if (startHour / 12 <= 1 && amOrPm.equalsIgnoreCase("PM")) {

           if ((startHour + elapsedHour) / 12 < 1 && startHour != 12) {

               System.out.println("Time is: " + (startHour + elapsedHour) + "PM");
           } else if (startHour == 12 && (startHour + elapsedHour) / 12 < 2) {
               System.out.println("Time is: " + (elapsedHour) + "PM");
           } else {

               System.out.println("Time is: " + Math.abs((12 - (startHour + elapsedHour))) + "AM");
           }

       }

       else {

           System.out.println("Please enter valid time");
       }

   }
}

/****************************ouput**************************/

Enter the starting hour:
12
AM or PM?
PM
How many hour elapsed:
10
Time is: 10PM

Enter the starting hour:
1
AM or PM?
AM
How many hour elapsed:
26
Time is: 3AM

Thanks a lot, Please let me know if you have any problem,,