Help fixing this porgram in java

Add a loop to the program so that the user can determine if they want to try another math problem. After the user is informed whether they answered the problem correctly or not, ask the user if they want to try again. Based on their answer, either repeat the code or quit. Also, add a farewell message at the end (after they choose to quit.)

Hints:

You will be adding/inserting code, beyond that, the existing code should not be altered.

The portion of the program that should loop occurs from lines 22 - 45.

The test for the loop will depend on the type of data (String, char, int) you use.

The program:

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

import java.util.Random; // Needed for the Random class

/**

This program demonstrates the Random class.

*/

public class MathTutor

{

public static void main(String[] args)

{

int number1; // A number

int number2; // A second number

int sum; // The sum of the numbers

int userAnswer; // The user's answer

String inputString; // Keyboard input

// Create a Random class object.

Random randomNumbers = new Random();

// Get two random numbers between 1 and 100

number1 = randomNumbers.nextInt(100);

number2 = randomNumbers.nextInt(100);

// Calculate the answer.

sum = number1 + number2;

// Display an addition problem and get the user's answer

inputString = JOptionPane.showInputDialog("What is the answer to

the following problem: " +

number1 + " + " +

number2 + " = ?");

// Convert the user's answer to a number

userAnswer = Integer.parseInt(inputString);

// Display the user's results.

if (userAnswer == sum)

{

JOptionPane.showMessageDialog(null, number1 + " + " + number2

+ " = " +

userAnswer + " Correct!");

}

else

{

JOptionPane.showMessageDialog(null, number1 + " + " + number2

+ " = " +

userAnswer + " Sorry, that

is wrong " +

"The correct answer is " + sum);

}

} //end of main()

} // end of MathTutor