Failed to open data.txt Exception in thread "main" java.lang.NullPointerException at Lab1.java.Lab1.main(Lab1.java:41)

package Lab1.java;

import java.util.Scanner;
import java.io.File;
    /**
     *  Lab1.java <br>
     * Lab1 class reads the data.txt file in and calculates the number of doubles the file contains, <br>
     * the total sum of all the doubles and integers in the file <br>
     * and calculates the number of non-numbers in the file. 
     * 
     * @author Cali 
     *
     */

public class Lab1 {
    /**
     *
     * @param args
     */

    public static void main(String[] args) {
        // TODO Auto-generated method stub          
            String currentString = null;

            int numDoubles = 0;
            int numNotNumbers = 0;
            double sumNumbers = 0;

            //File file = new File("data.txt");
            Scanner in = null;
            try{
                 in = new Scanner(new File("data.txt"));
                 while(in.hasNext()){
                        if(in.hasNextInt()){
                            sumNumbers += in.nextInt();
                        } else if(in.hasNextDouble()){
                            numDoubles++;
                            sumNumbers += in.nextDouble();
                        } else {
                            currentString = in.next();
                            numNotNumbers++;
                        }
                    }   
            } catch (Exception FileNotFoundException){
                System.err.println("Failed to open data.txt");
            } finally {
                in.close();
                System.exit(1);
            }       
            System.out.println(numDoubles + " " + numNotNumbers + " " + sumNumbers);
    }
}