A Dumb Calculator

Code

    /// Name: Rachel Smith
    /// Period: 5
    /// Program Name: a Dumb Calculator
    /// File Name: ADumbCalculator.java
    /// Date Finished: 9/23/2015
    
    import java.util.Scanner;
    
    public class ADumbCalculator {
        
        public static void main( String[] args ) {
        
            Scanner keyboard = new Scanner(System.in);
    
            Double n1, n2, n3, n4;
    
            System.out.print( "What is your first number? " );
            n1 = keyboard.nextDouble();
    
            System.out.print( "What is your second number? " );
            n2 = keyboard.nextDouble();
    
            System.out.print( "What is your third number? " );
            n3 = keyboard.nextDouble();
            
            n4 = (n1+n2+n3) / 2;
    
            System.out.println( "\n( " + n1 + " + " + n2 + " + " + n3 + " ) / 2 is... " + n4 );
            
        }
    }
    

Picture of the output