Question

Suppose that the following data is in the file Test2Data.txt (attached).

87 78 83 94

23 89 92 70

92 78 34 56

Use a loop to find the sum of the numbers in each line. For each line,output the numbers together with their sum as shown below.
87 78 83 94 sum = 342
23 89 92 70 sum = 274
92 78 34 56 sum = 260

Answer 1

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.Scanner;

public class ReadFile {

   public static void main(String[] args) throws Exception {
       Scanner sc = new Scanner(System.in);
       BufferedReader br = new BufferedReader(new FileReader(new File("Test2Data.txt")));
       String line = br.readLine();
       int sum;
       while (line != null) {
           sum=0;
           //splitting Rinto tokens
           String arr[] = line.split(" ");
           //iterating through numbers and converting it into integers and adding to sum
           for(String s:arr)
               sum=sum+Integer.parseInt(s);
           System.out.println(line+" sum = "+sum);
           line = br.readLine();
       }
   }

}

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