Question

1. Find the readData() method
2. Inside this method is a try block without any catch statements. Add the following 5 catch statements to this file (Hint: put them in the right order):
   1. RuntimeException
   2. Exception
   3. FileNotFoundException
   4. NumberFormatException
   5. InputMismatchException
3. For each of these print out a short message describing the exception that occurred

Java Class

import java.io.File;
import java.io.FileNotFoundException;
import java.util.InputMismatchException;
import java.util.Scanner;

public class ReadInData {

   public static double readData(String fileName) {
       File file = new File(fileName);
       Scanner scan;
       double sum = 0;
       try {
           scan = new Scanner(file);
           int numOfValues = Integer.parseInt(scan.nextLine()); // Read in Val for # values
           for(int i = 0; i < numOfValues; i++) { // for-loop to get that many values
               sum += scan.nextDouble(); // add the values together (doubles)
           }
           scan.close();
           return sum; // return the sum of all the values in the file
       }//add catch statements here      
   }

   public static void main(String[] args) {
       System.out.println(readData("Test3.txt"));
       System.out.println(readData("Test2.txt"));
       System.out.println(readData("Text4.txt")); // notice spelling of the file name!
       System.out.println(readData("Test4.txt"));
   }

}

Test2.txt

6
5
3.0
"9.8"
-19.8
-54.1
85.5

Test3.txt

4.0
5.0
6.2
4.2
1.0

Test4.txt

5
4.2
3.1
2.2
6.1

Answer 1

HELLO I AM ADDING CODE HERE
WITH OUTPUT

PLEASE GO THROUGH IT
THANK YOU

import java.io.File;
import java.io.FileNotFoundException;
import java.util.InputMismatchException;
import java.util.Scanner;

public class ReadInData{

   public static double readData(String fileName) {
       File file = new File(fileName);
       Scanner scan;
       double sum = 0;
       try {
           scan = new Scanner(file);
           int numOfValues = Integer.parseInt(scan.nextLine()); // Read in Val for # values
           for(int i = 0; i < numOfValues; i++) { // for-loop to get that many values
               sum += scan.nextDouble(); // add the values together (doubles)
           }
           scan.close();
     }//add catch statements here 
     catch(FileNotFoundException ex)
     {
       System.out.println("Provided file not found");
     }
     catch(NumberFormatException ex)
     {
       System.out.println("Format of the number is not correct");
     }
     catch(InputMismatchException ex)
     {
       System.out.println("Hey Input is not matching correctly");
     }
     catch(RuntimeException ex)
     {
       System.out.println("Runtime exception occured ");
     }
     catch(Exception ex)
     {
       System.out.println("Hey something went wrong! Not able to find it ");
     }
     return sum;
   }

   public static void main(String[] args) {
       System.out.println(readData("Test3.txt"));
       System.out.println(readData("Test2.txt"));
       System.out.println(readData("Text4.txt")); // notice spelling of the file name!
       System.out.println(readData("Test4.txt"));
   }

}

OUTPUT