Question

Write a program that allows students to schedule appointments at either 1, 2, 3, 4, 5, or 6 o�clock pm.

Use an array to store each of the six (strings) of names for the 6 time slots.

Write a loop that iterates as long as the array has a freespace (program should end when all time slots are taken).

Within a try block, allow the user to enter a time and a name. If the time is free, put the name in the array.

If the time is not free, throw a TimeInUseException. If the time is not valid, throw an InvalidTimeException.

Use a catch block for each different kind of exception.

The exceptions should NOT exit the program but perform actions to help user:

TimeInUseException - could be used to ask user to input a different time.

InvalidTimeException - could be used to enter a valid time.

Please test your program with valid data, along with data which will cause the two exceptions to be thrown.

Write a program that allows students to schedule appointments at either 1, 2, 3, 4, 5, or 6 o�clock pm.

Use an array to store each of the six (strings) of names for the 6 time slots.

Write a loop that iterates as long as the array has a freespace (program should end when all time slots are taken).

Within a try block, allow the user to enter a time and a name. If the time is free, put the name in the array.

If the time is not free, throw a TimeInUseException. If the time is not valid, throw an InvalidTimeException.

Use a catch block for each different kind of exception.

The exceptions should NOT exit the program but perform actions to help user:

TimeInUseException - could be used to ask user to input a different time.

InvalidTimeException - could be used to enter a valid time.

Please test your program with valid data, along with data which will cause the two exceptions to be thrown.

Answer 1

Screenshot

Program

import java.util.Scanner;

public class ExceptionThrownContinue {

   public static void main(String[] args) {
       //Input read
       Scanner sc=new Scanner(System.in);
       //Array to store name os students in each slot
       String slot[]=new String[6];
       //Loop until all slots fill
       int i=0;
       while(i<6) {
           //Prompt for name of the student
           System.out.print("Enter your name: ");
           String name=sc.nextLine();
           //Prompt for the time slot
           System.out.print("Enter the slot you want: ");
           int slotNum=sc.nextInt();
           sc.nextLine();
           try {
               //Exception check for invalid slot number
                if(slotNum>6 || slotNum<1) {
                   throw new TimeInvalidException("InValid time slot!!!");
                }
              //Exception check for already booked
               else if(slot[slotNum-1]!=(null)) {
               throw new TimeInUseException("This time already taken!!!");
              }
                //Otherwise alocate slot
              else {
               slot[slotNum-1]=name;
               i++;
              }
                //Exceptions
           } catch (TimeInvalidException e) {
                   continue;
           }
           catch (TimeInUseException e) {
               continue;
           }
       }
       //All slots filled
       System.out.println("All slots filled!!!");
   }

   }
//Invalid exception generator
   class TimeInvalidException extends Exception{
       public TimeInvalidException(String e) {
           System.out.println(e);
       }
   }
   //Already taken exception generator
   class TimeInUseException extends Exception{
       public TimeInUseException(String e) {
           System.out.println(e);
       }
   }

-----------------------------------------------------------------

Output

Enter your name: Macheal John
Enter the slot you want: 1
Enter your name: Milly Mark
Enter the slot you want: 1
This time already taken!!!
Enter your name: Milly Mark
Enter the slot you want: 2
Enter your name: Adorn Adrian
Enter the slot you want: 0
InValid time slot!!!
Enter your name: Adorn Adrian
Enter the slot you want: 3
Enter your name: Alwin Albert
Enter the slot you want: 7
InValid time slot!!!
Enter your name: Alwin Albert
Enter the slot you want: 4
Enter your name: Becca Benny
Enter the slot you want: 5
Enter your name: Boby Bay
Enter the slot you want: 6
All slots filled!!!