Java™ How To Program (Early Objects), Tenth Edition

Application: Summing the Even Integers from 2 to 20

We now consider two sample applications that demonstrate simple uses of for. The application in Fig. 5.5 uses a for statement to sum the even integers from 2 to 20 and store the result in an int variable called total.

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 1   // Fig. 5.5: Sum.java 2   // Summing integers with the for statement. 3  4   public class Sum 5   { 6      public static void main(String[] args) 7      { 8         int total = 0; 9 10         // total even integers from 2 through 2011         for (int number = 2; number <= 20; number += 2) 12            total += number;                             13 14         System.out.printf("Sum is %d%n", total);15      }16   } // end class Sum

Sum is ...