JOptionPane handling ok, cancel and x button

Question

There is one problem I am facing with my JOptionPane if I don't key in anything,no matter what I press(the ok,cancel or the x button(the top right button in the JOptionPane)), it will prompt me until the I key in a positive value. but I only want the prompt to happen when i pressed ok.

If I click on cancel or the x button(the top right button in the JOptionPane), it will close the JOptionPane

How can I do this?

import javax.swing.JOptionPane;

public class OptionPane {
    public static void main(final String[] args) {
        int value = 0;
        boolean isPositive = false , isNumeric = true;
        do {
            try {
                value = Integer.parseInt(JOptionPane.showInputDialog(null,
                    "Enter value?", null));
            } catch (NumberFormatException e) {
                System.out.println("*** Please enter an integer ***");
                isNumeric = false;
            }

             if(isNumeric) {
                if(value <= 0) {
                    System.out.println("value cannot be 0 or negative");
                }

                else {
                    System.out.println("value is positive");
                    isPositive = true;
                }
            }
        }while(!isPositive);
    }
}

Answer 1

The basic approach for this can look like I've showed below:

Updated after @MadProgrammer comment.

import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class DemoJOption {
    public static void main(String args[]) {
        int n = JOptionPane.showOptionDialog(new JFrame(), "Message", 
        "Title", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, 
        null, new Object[] {"Yes", "No"}, JOptionPane.YES_OPTION);

        if (n == JOptionPane.YES_OPTION) {
            System.out.println("Yes");
        } else if (n == JOptionPane.NO_OPTION) {
            System.out.println("No");
        } else if (n == JOptionPane.CLOSED_OPTION) {
            System.out.println("Closed by hitting the cross");
        }
    }
}