1  import java.io.FileNotFoundException;

  2  import java.io.IOException;

  3  import java.util.Scanner;

  4  

  5  /**

  6     This program reads a file containing numbers and analyzes its contents.

  7     If the file doesn't exist or contains strings that are not numbers, an

  8     error message is displayed.

  9  */

 10  public class DataAnalyzer

 11  {

 12     public static void main(String[] args)

 13     {

 14        Scanner in = new Scanner(System.in);

 15        DataSetReader reader = new DataSetReader();

 16        

 17        boolean done = false;

 18        while (!done) 

 19        {

 20           try 

 21           {

 22              System.out.println("Please enter the file name: ");

 23              String filename = in.next();

 24              

 25              double[] data = reader.readFile(filename);

 26              double sum = 0;

 27              for (double d : data) sum = sum + d; 

 28              System.out.println("The sum is " + sum);

 29              done = true;

 30           }

 31           catch (FileNotFoundException exception)

 32           {

 33              System.out.println("File not found.");

 34           }

 35           catch (BadDataException exception)

 36           {

 37              System.out.println("Bad data: " + exception.getMessage());

 38           }

 39           catch (IOException exception)

 40           {

 41              exception.printStackTrace();

 42           }

 43        }

 44     }

 45  }