If the students input is incorrect, display a message \"No. Please try again. th

Question

If the students input is incorrect, display a message "No. Please try again. then let the student try the same question repeatedly until the student finally gets it right. Use JoptionPane() method to display the program output. this is what I'm missing in my code any help to add it would be great, i don't want the user to be given the answer i want them still to answer the question below is code

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

try this, i've changed the code marked in red color

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
while (number1 * number2 != sum)
{
JOptionPane.showMessageDialog(null, "You are incorrect");
}
JOptionPane.showMessageDialog(null, "You answered " + sum + " which is correct ");

// 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
while (number1 - number2 != diff)
{
JOptionPane.showMessageDialog(null, "You are incorrect");
}
JOptionPane.showMessageDialog(null, "You answered " + diff + " which is correct ");

// 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
while (number1 + number2 != sum)
{
JOptionPane.showMessageDialog(null, "You are incorrect");
}
JOptionPane.showMessageDialog(null, "You answered " + sum + " which is correct ");
// will ask user if they wish to continue after they have answered the question
option = JOptionPane.showConfirmDialog(null, "Would you like another question?");
}
}



}
}

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.