Addition.java
// Fig. 12.2: Addition.java // Addition program that uses JOptionPane for input and output. import javax.swing.JOptionPane; public class Addition { public static void main(String[] args) { // obtain user input from JOptionPane input dialogs String firstNumber = JOptionPane.showInputDialog("Enter first integer"); String secondNumber = JOptionPane.showInputDialog("Enter second integer"); // convert String inputs to int values for use in a calculation int number1 = Integer.parseInt(firstNumber); int number2 = Integer.parseInt(secondNumber); int sum = number1 + number2; // add numbers // display result in a JOptionPane message dialog JOptionPane.showMessageDialog(null, "The sum is " + sum, "Sum of Two Integers", JOptionPane.PLAIN_MESSAGE); } } // end class Addition
Maintained by John Loomis, updated Mon Jan 20 18:34:28 2020