// Fig. 2.7: Addition.java
   // Addition program that displays the sum of two numbers.
   import java.util.Scanner; // program uses class Scanner

   public class Addition
   {
      // main method begins execution of Java application
      public static void main( String args[] )
      {
        // create Scanner to obtain input from command window
        Scanner input = new Scanner( System.in );

        int number1; // first number to add
        int number2; // second number to add23
        int sum; // sum of number1 and number2

        System.out.print( "Enter first integer: " ); // prompt
        number1 = input.nextInt(); // read first number from user

        System.out.print( "Enter second integer: " ); // prompt
        number2 = input.nextInt(); // read second number from user

        sum = number1 + number2; // add numbers

        System.out.printf( "Sum is %d\n", sum ); // display sum

     } // end method main

  } // end class Addition