import javax.swing.JOptionPane; // import class JOptionPane public class Addition {
public static void main( String args[] )
{
String firstNumber, // first string entered by user
secondNumber; // second string entered by user
int number1, // first number to add
number2, // second number to add
sum, // sum of number1 and number2
mul ,sub,div;
// read in first number from user as a string
firstNumber =
JOptionPane.showInputDialog( "Enter first integer" ); // read in second number from user as a string
secondNumber =
JOptionPane.showInputDialog( "Enter second integer" ); // convert numbers from type String to type int
number1 = Integer.parseInt( firstNumber );
number2 = Integer.parseInt( secondNumber ); // add the numbers
sum = number1 + number2;
mul = number1*number2;
sub = number1-number2;
div = number1/number2;
String a;
a=JOptionPane.showInputDialog("please choose formula mode sum sub mul div"); // display the results
if(a.equals("+"))
JOptionPane.showMessageDialog(
null, "The sum is " + sum, "Results",
JOptionPane.PLAIN_MESSAGE );
if(a.equals("-"))
JOptionPane.showMessageDialog(
null, "The sum is " + sub, "Results",
JOptionPane.PLAIN_MESSAGE );
if(a.equals("*"))
JOptionPane.showMessageDialog(
null, "The sum is " + mul, "Results",
JOptionPane.PLAIN_MESSAGE );
if(a.equals("/"))
JOptionPane.showMessageDialog(
null, "The sum is " + div, "Results",
JOptionPane.PLAIN_MESSAGE );
System.exit( 0 ); // terminate the program
}
}