public class Addition
1: // Fig. 11.2: Addition.java
2: // Addition program that uses JOptionPane for input and output.
3: import javax.swing.JOptionPane; // program uses JOptionPane
4:
5: public class Addition
6: {
7: public static void main( String args[] )
8: {
9: // obtain user input from JOptionPane input dialogs
10: String firstNumber =
11: JOptionPane.showInputDialog( "Enter first integer" );
12: String secondNumber =
13: JOptionPane.showInputDialog( "Enter second integer" );
14:
15: // convert String inputs to int values for use in a calculation
16: int number1 = Integer.parseInt( firstNumber );
17: int number2 = Integer.parseInt( secondNumber );
18:
19: int sum = number1 + number2; // add numbers
20:
21: // display result in a JOptionPane message dialog
22: JOptionPane.showMessageDialog( null, "The sum is " + sum,
23: "Sum of Two Integers", JOptionPane.INFORMATION_MESSAGE );
24: } // end method main
25: } // end class Addition
26:
27:
28: /**************************************************************************
29: * (C) Copyright 1992-2005 by Deitel & Associates, Inc. and *
30: * Pearson Education, Inc. All Rights Reserved. *
31: * *
32: * DISCLAIMER: The authors and publisher of this book have used their *
33: * best efforts in preparing the book. These efforts include the *
34: * development, research, and testing of the theories and programs *
35: * to determine their effectiveness. The authors and publisher make *
36: * no warranty of any kind, expressed or implied, with regard to these *
37: * programs or to the documentation contained in these books. The authors *
38: * and publisher shall not be liable in any event for incidental or *
39: * consequential damages in connection with, or arising out of, the *
40: * furnishing, performance, or use of these programs. *
41: *************************************************************************/