// Fig. 5.5: Sum.java
// Counter-controlled repetition with the for structure

// Java extension packages
import javax.swing.JOptionPane;

public class Sum {

   // main method begins execution of Java application
   public static void main( String args[] )
   {
      int sum = 0;

      // sum even integers from 2 through 100
      for ( int number = 2; number <= 100; number += 2 )
         sum += number;

      // display results
      JOptionPane.showMessageDialog( null, "The sum is " + sum,
         "Sum Even Integers from 2 to 100",
         JOptionPane.INFORMATION_MESSAGE );

      System.exit( 0 );   // terminate the application

   }  // end method main

}  // end class Sum


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