Sum of Two Numbers Using JOptionPane in Java

 A simple addition of two numbers using Java that using swing JOptionPane to accept and display the sum of the two numbers.

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Program Listing

// Addition,java

// Addition program that uses JOptionPane for input and output.

// Jake Rodriguez Pomperada, MAED-IT, MIT

// www.jakerpomperada.blogspot.com  and www.jakerpomperada.com

// jakerpomperada@gmail.com

// Bacolod City, Negros Occidental Philippines

import javax.swing.JOptionPane; 

public class Addition 

{

   public static void main( String args[] )

   {

      // obtain user input from JOptionPane input dialogs

      String x = 

         JOptionPane.showInputDialog( "Enter first integer" );

      String y =

          JOptionPane.showInputDialog( "Enter second integer" );

      // convert String inputs to int values for use in a calculation

      int a = Integer.parseInt(x); 

      int b = Integer.parseInt(y);

      // Perform addition of variables a and variable b

      int sum = a+b;

      // display result in a JOptionPane message dialog

      JOptionPane.showMessageDialog( null, "The sum of " + a + " and " + b + " is " + sum + ".", 

         "Sum of Two Numbers Using JOptionPane in Java", JOptionPane.INFORMATION_MESSAGE );

   } // end method main

} // end class Addition