i need to have a menu using joptionpane() and ask the user to choose addition ,

Question

i need to have a menu using joptionpane() and ask the user to choose addition , subtraction, or multiplication, and also if they answer incorrectly then it repeats the question

the code below




//import class JOptionPane
import javax.swing.JOptionPane;

//import class Scanner
import java.util.Scanner;

//main function

public class MultiplyNew {

static int x , sum , y , sub , mul , div;
public static void main( String args[] )
{
//declare string, questions & sumIn
//variables

String question,
sumIn;

//declare answer, sums, number1 & -
//number2 variables as integers

int answer, sums, number1, number2;

//initialize answer & sums variable

answer = 0;
sums = 0;



//get two random numbers between 0 and 9

number1 = ( int ) ( Math.random() * 10 );
number2 = ( int ) ( Math.random() * 10 );


//declare option variable and prompt
//if they want to run the program again

int option = JOptionPane.YES_OPTION;

//loop validation to re-run the program
//or to exit

while (option == JOptionPane.YES_OPTION)
{
switch

//Prompt for user input

sumIn = JOptionPane.showInputDialog
( "How much is " + number1 +
" times " + number2);

//Answer calculation

answer = number1 * number2;

//convert String to integer
sums = Integer.parseInt( sumIn );


//loop validation for correct answer

while (sums != answer) {


//If answer is incorrect inform the user
//and prompt for new answer input

sumIn = JOptionPane.showInputDialog
("Incorrect answer, please try again "
+ number1 + " times " + number2);
sums = Integer.parseInt( sumIn );

}

//If answer is correct inform the user
//and proceed to the next line of the code

JOptionPane.showMessageDialog
(null, "Very Good! Correct answer: "
+ number1 + " times " + number2+ " = " + sums);

{

}

//Ask the user if he/she wants to run the
//program again

option = JOptionPane.showConfirmDialog
(null, "Do you want to run the program again?");


//Generate new random numbers for new run

number1 = ( int ) ( Math.random() * 10 );
number2 = ( int ) ( Math.random() * 10 );

}

//Inform user they choose to exit the program

JOptionPane.showMessageDialog
(null, "You choose to exit the program, bye!");

}


//Methods to calculate addition, subtraction,
//Multiplication, and division
/////////////////////////////////////////////
public static int sum ( )
{
sum = x + y;
System.out.println("The sum is :" + sum);
return sum;
}

public static int subtract ( )
{
sub = x - y;
System.out.println("The subtract is :" + sub);
return sub;
}

public static int multiply ( )
{
mul = x * y;
System.out.println("The multiple is :" + mul);
return mul;
}

public static int divide ( )
{
div = x / y;
System.out.println("The divide is :" + div);
return div;
}

/////////////////////////////////////////////

}

Explanation / Answer

I don't see System.exit() in your code... u need to have this with JOptionPane. I don't have eclipse now so can't correct your code but can give you another code which might help you.. //hope this helps import javax.swing.JOptionPane; public class testing { public static void main(String[] args) { String[] choices = {"Addition", "Subtraction", "Multiplication", "Division"}; int jeff; int num1,num2,sum,difference,product,quotient; do { int response = JOptionPane.showOptionDialog( null , "Choose Arithmetic Operation" , "Operators" , JOptionPane.YES_NO_OPTION , JOptionPane.PLAIN_MESSAGE , null , choices , "()" ); num1 = Integer.parseInt(JOptionPane.showInputDialog("Enter First Number:")); System.out.println(num1); num2 = Integer.parseInt(JOptionPane.showInputDialog("Enter Second Number:")); System.out.println(num2); sum = num1+num2; difference = num1-num2; product = num1*num2; quotient = num1/num2; int result = (int)(Math.random() * 4); switch (result) { case 0: JOptionPane.showMessageDialog(null, "The Sum is = " +sum); break; case 1: JOptionPane.showMessageDialog(null, "The Difference is = " +difference); break; case 2: JOptionPane.showMessageDialog(null, "The Product is = " +product); break; case 3: JOptionPane.showMessageDialog(null, "The Quotient is = " +quotient); break; default: JOptionPane.showMessageDialog(null, "Invalid Input"); } jeff = JOptionPane.showConfirmDialog(null, "Try Again?"); } while (jeff == JOptionPane.YES_OPTION); System.exit(0); } }

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