Assignment #25 and DumbCalculator

Code

      /// Name: Jason Kim
      /// Period: 7
      /// Program Name: DumbCalculator
      /// File Name: DumbCalculator.java
      /// Date Finished:9/25/15
      
      import java.util.Scanner;
      public class DumbCalculator
      {   
          public static void main (String[] args)
          {
              Scanner keyboard = new Scanner(System.in);
              double firstNumb, secondNumb, thirdNumb;
              
              System.out.print("What is your first number? ");
              firstNumb = keyboard.nextDouble();
              System.out.print("What is your second number? ");
              secondNumb = keyboard.nextDouble();
              System.out.print("What is your third number? ");
              thirdNumb = keyboard.nextDouble();
              
              System.out.println();
              System.out.println("( " + firstNumb + " + " + secondNumb + " + " + thirdNumb + " )" 
                                  + "/ 2 is... " + ((firstNumb + secondNumb + thirdNumb)/2));
          }
      }
    

Picture of the output