Adding Two Doubles

Here is the start on a program that asks the user for two doubles, adds them together, and writes out the result.

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

class AddDoubles
{
  public static void main (String[] args)
  {
    double first, second, sum;
    Scanner scan = new Scanner( System.in );
 
    // Read in the first double
    System.out.print("Enter the first double:");
    first = scan.nextDouble();

    // Read in the second double
    
    

    // Compute the sum and write it out
    
    
  }
}

Fill the blanks to complete the program. (Do this by clicking in a blank and typing. Nothing special happens when you fill the blanks They are just there to give you a place to type.)