Question

In a package named "lecture" create an object named "LectureQuestion" with a method named "fileSum" that takes a filename as a String and returns an Int which is the sum of the values in the file • The input file will contain multiple lines each with multiple integer values separated by the '#' character • Return the sum of all of the integer values in the file • You may assume that the file exists and is properly formatted Submit a zip file of your project to AutoLab: File > Export to zip file

Answer 1

package lecture;

import java.io.BufferedReader;
import java.io.FileReader;

public class LectureQuestion {

   public static void main(String[] args) {
       // Call function with filename
       int sum = fileSum("sumdata.txt");
       System.out.println("Sum of data in files: "+sum);
   }
  
   public static int fileSum(String filename) {
       int sum = 0;
       try {
           // Open file to read
           BufferedReader br = new BufferedReader(new FileReader(filename));
           String line = "";
          
           while((line=br.readLine())!=null) {
               // Split the line usig delimiter #
               String data[] = line.split("#");
               for(int i = 0;i<data.length;i++) {
                   // Add values to sum after converting into Integer
                   sum+=Integer.parseInt(data[i]);
               }
           }
       } catch (Exception e) {
           System.out.println(e.getMessage());
       }
       // Return sum
       return sum;
   }
}

INPUT FILE-

OUTPUT-