Question

How to write a Java file out that that reads from numbers.txt with these numbers

2 6 7 9
5 4 3
8 0 1 6 8
2 3

and write to a file called totalSum.txt that looks like:

2+6+7+9=24 and so on using this code

import java.io.*;
import java.util.Scanner;

public class FileScanner
{

   public static void main(String[] args)
   {
       /* For Homework! Tokens*/
       Scanner file = null;
       PrintWriter fout= null;
       try {
           file = new Scanner(new File("numbers.txt"));
           fout = new PrintWriter("TotalSum.txt");
           while(file.hasNext())
           {
              
               @SuppressWarnings("resource")
               Scanner line = new Scanner(file.nextLine());
               int totalSum = 0;
               while(line.hasNext())
               {
                   int number = line.nextInt();
                   totalSum+=number;
                   fout.println( totalSum );
              
               }
               fout.println( " = "+totalSum);
           }  
       }
       catch (FileNotFoundException e)
       {
          
           System.out.println("NOT FOUND");
       }
       finally
       {
           if(fout!=null)fout.close();
       }
      
       if(file!=null)file.close();
      
   }
  
}

Answer 1

import java.io.*;
import java.util.Scanner;

public class FileScanner {

    public static void main(String[] args) {
        /* For Homework! Tokens*/
        Scanner file = null;
        PrintWriter fout = null;
        try {
            file = new Scanner(new File("numbers.txt"));
            fout = new PrintWriter("TotalSum.txt");
            while (file.hasNext()) {
                @SuppressWarnings("resource")
                Scanner line = new Scanner(file.nextLine());
                int totalSum = 0;
                while (line.hasNext()) {
                    int number = line.nextInt();
                    totalSum += number;
                    fout.print(number);
                    if (line.hasNext()) {
                        fout.print("+");
                    }
                }
                fout.println("=" + totalSum);
            }
        } catch (FileNotFoundException e) {
            System.out.println("NOT FOUND");
        } finally {
            if (fout != null) fout.close();
        }

        if (file != null) file.close();
    }
}