Refactoring the Code

Objectives

We would like to :

Clean up the main function just a bit.

Notes

I eventually want to just print all of the food from a single class.(fresh, Frozen, ...).
But before I move on, I want to clean up the main.
There is an idea that all of the code in a function should be "cohesive"
- It is at the same detail.
- It accomplishes a single thing.
In this case, the string parsing is not really part of the main.
So I am going to write a NextItem function
- It will get the next item from the file.
- And set class variables containing the values.
But since I will use it in a while loop, I want it to be a value returning function.

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

public class FruitsDemo{
    private static Scanner fileScanner;
    private static Scanner inputScanner;

    // data per line
    private static String fruitName;
    private static String fruitType;
    private static float cost;
    private static String unit;

    public static void main(String[] args) {
        MakeScanners();

        fileScanner.nextLine();

        while (GetNextData()) {
              System.out.printf("%s costs $%.2f %s\n", fruitName, cost, unit);
        }

        fileScanner.close();
    }

    private static boolean GetNextData() {
         boolean validData = false;

         if (fileScanner.hasNext()){

             String data = fileScanner.nextLine();
             String[] dataItems = data.split(",");

             fruitName = dataItems[0];
             fruitType = dataItems[1];
             cost = Float.parseFloat(dataItems[2]);
             unit = dataItems[3];
             validData = true;
         }
         return validData;
    }

    private static void MakeScanners(){
       inputScanner = new Scanner(System.in);
       String fileName;
       boolean fileOpen = false;

       do {
           System.out.printf("Enter a file name => ");
           fileName = inputScanner.next();
           System.out.println();

          try {
              fileScanner = new Scanner(new File(fileName));
              fileOpen = true;
          } catch (FileNotFoundException  e) {
              System.out.printf("Error could not open the file %s\n",fileName);
          }
       } while(!fileOpen);
    }

}