How to display message dialogue if guessing number is equal to lucky number?

Question

This code is designed to show message if guess variable is equal to lucky variable which has been initialised. So I have created an object in to read the input from the user. So in the if,else loop I have crafted a condition to see if guess is equal to lucky. My program compiles and when I enter a number, it doesnt show the message dialog.I cannot use println() function and only message dialog to be used

public static void main(String[] args) {
    // TODO Auto-generated method stub

    int guess,lucky;
    String strOut=" ";
    lucky = 8;

     Scanner in = new Scanner(System.in);
     System.out.println("Please guess your lucky number: ");

     guess = in.nextInt();

    if(guess == lucky)
    {
        strOut = "Congratulations! ";
    }
    else
    {
        strOut = "Thank you for guessing! ";
    }

    JOptionPane.showMessageDialog(null, strOut);
}

}

Code works here; should probably use a different thread for the swing option pane but I can't reproduce the issue with your code. — Elliott Frisch, Apr 28 '20 at 06:57
my guess, it is shown, but outside of your screen (somewhere) since you don't control the position of the dialog — Stultuske, Apr 28 '20 at 07:07
if that is the issue, this may help you out: https://stackoverflow.com/questions/13760117/how-to-set-the-location-of-joptionpane-showmessagedialog — Stultuske, Apr 28 '20 at 07:10
mine doesnt trigger message that's the problem. Is it the fact that my message dialog is hidden? — Big_Smoke, Apr 28 '20 at 07:15
@Big_Smoke that's indeed my guess. The dialog is 'shown', it's just positioned outside of your screen. — Stultuske, Apr 28 '20 at 07:25

saraafr · Answer 1 · 2020-05-06T09:53:31.980

1

you should defineJFrame f = new JFrame(); and use it in JOptionPane.showMessageDialog(f, strOut);

edited May 06 '20 at 09:53

answered May 06 '20 at 09:47

saraafr

1
4
19

What is JFrame ? – ariankazemi Apr 21 '23 at 11:56

How to display message dialogue if guessing number is equal to lucky number?

1 Answers1