need to add a check for addition subtraction and multiplication, if the user ans

Question

need to add a check for addition subtraction and multiplication, if the user answers incorrectly it will keep asking the same question till they get it correct code is below

import javax.swing.JOptionPane;
import javax.swing.*;
import java.util.Scanner;

public class Assignment4{
public static void main(String[] args) {





int sum =0;
// Keep reading data until the user answers No
int option = JOptionPane.YES_OPTION;
while (option == JOptionPane.YES_OPTION) {

// will display random numbers up to 12
int number1= (int)(Math.random() * 12);
int number2= (int)(Math.random() * 12);
String choice=JOptionPane.showInputDialog("enter '1' for Addition,'2' for multiplication,'3' for subtraction");
if(choice.equals("2"))
{
// will ask user to answer the total of the 2 random numbers
String dataString = JOptionPane.showInputDialog ("What is "+number1 + " * " +number2 + " ? ");
sum= number1 * number2;

Scanner input = new Scanner(System.in);
int data = Integer.parseInt(dataString);
sum = data;

// this will check to see if answer is correct or incorrect
// will display message based on answer
if (number1 * number2 == sum)
JOptionPane.showMessageDialog(null, "You answered " + sum + " which is correct ");
else JOptionPane.showMessageDialog(null, "You are incorrect, the correct answer is " + (number1 * number2));

// will ask user if they wish to continue after they have answered the question
option = JOptionPane.showConfirmDialog(null, "Would you like another question?");

}
else if(choice.equals("3"))
{
// will ask user to answer the total of the 2 random numbers
String dataString = JOptionPane.showInputDialog ("What is "+number1 + "- " +number2 + " ? ");
int diff= number1-number2;

Scanner input = new Scanner(System.in);
int data = Integer.parseInt(dataString);
diff=data;

// this will check to see if answer is correct or incorrect
// will display message based on answer
if ((number1 - number2) == diff)
JOptionPane.showMessageDialog(null, "You answered " + diff + " which is correct ");
else JOptionPane.showMessageDialog(null, "You are incorrect, the correct answer is " + (number1 - number2));

// will ask user if they wish to continue after they have answered the question
option = JOptionPane.showConfirmDialog(null, "Would you like another question?");
}
else if(choice.equals("1"))
{
// will ask user to answer the total of the 2 random numbers
String dataString = JOptionPane.showInputDialog ("What is "+number1 + " + " +number2 + " ? ");
sum= number1 + number2;

Scanner input = new Scanner(System.in);
int data = Integer.parseInt(dataString);
sum = data;




// this will check to see if answer is correct or incorrect
// will display message based on answer
if ((number1 + number2) == sum)
JOptionPane.showMessageDialog(null, "You answered " + sum + " which is correct ");
else JOptionPane.showMessageDialog(null, "You are incorrect, the correct answer is " + (number1 + number2));

// will ask user if they wish to continue after they have answered the question
option = JOptionPane.showConfirmDialog(null, "Would you like another question?");
}
}



}
}

Explanation / Answer

import javax.swing.JOptionPane; ;import javax.swing.*; import java.util.Scanner; public class Assignment4{ public static void main(String[] args) { int sum =0; // Keep reading data until the user answers No int option = JOptionPane.YES_OPTION; while (option == JOptionPane.YES_OPTION) { // will display random numbers up to 12 int number1= (int)(Math.random() * 12); int number2= (int)(Math.random() * 12); String choice=JOptionPane.showInputDialog("enter '1' for Addition,'2' for multiplication,'3' for subtraction"); while(choice.equals("1") || choice.equals("2") || choice.equals("3")) { switch(choice) { case "2": // will ask user to answer the total of the 2 random numbers String dataString = JOptionPane.showInputDialog ("What is "+number1 + " * " +number2 + " ? "); sum= number1 * number2; Scanner input = new Scanner(System.in); int data = Integer.parseInt(dataString); sum = data; // this will check to see if answer is correct or incorrect // will display message based on answer if (number1 * number2 == sum) JOptionPane.showMessageDialog(null, "You answered " + sum + " which is correct "); else JOptionPane.showMessageDialog(null, "You are incorrect, the correct answer is " + (number1 * number2)); // will ask user if they wish to continue after they have answered the question option = JOptionPane.showConfirmDialog(null, "Would you like another question?"); break; case "3": // will ask user to answer the total of the 2 random numbers String dataString = JOptionPane.showInputDialog ("What is "+number1 + "- " +number2 + " ? "); int diff= number1-number2; Scanner input = new Scanner(System.in); int data = Integer.parseInt(dataString); diff=data; // this will check to see if answer is correct or incorrect // will display message based on answer if ((number1 - number2) == diff) JOptionPane.showMessageDialog(null, "You answered " + diff + " which is correct "); else JOptionPane.showMessageDialog(null, "You are incorrect, the correct answer is " + (number1 - number2)); // will ask user if they wish to continue after they have answered the question option = JOptionPane.showConfirmDialog(null, "Would you like another question?"); break; case "1": // will ask user to answer the total of the 2 random numbers String dataString = JOptionPane.showInputDialog ("What is "+number1 + " + " +number2 + " ? "); sum= number1 + number2; Scanner input = new Scanner(System.in); int data = Integer.parseInt(dataString); sum = data; // this will check to see if answer is correct or incorrect // will display message based on answer if ((number1 + number2) == sum) JOptionPane.showMessageDialog(null, "You answered " + sum + " which is correct "); else JOptionPane.showMessageDialog(null, "You are incorrect, the correct answer is " + (number1 + number2)); // will ask user if they wish to continue after they have answered the question option = JOptionPane.showConfirmDialog(null, "Would you like another question?"); break; default: String choice=JOptionPane.showInputDialog("enter '1' for Addition,'2' for multiplication,'3' for subtraction"); break; } } } }

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