JOptionPane Input Dialog is blank

[Maureen Augustus]

Hi, I'm hoping that A) this is the right form and B) this is not a duplicate question. I didn't find anything exactly like it in a search.

Anyway, I'm new to Java and working on examples inmy schoolbook. When I run the code below, I get a blank window titled "Input". My only options are to Enter through the inputs, at which point I get a NumberFormatException because I haven't entered any numbers. I think my problem might have something to do with my Java versions. I believe I'm running 1.4.2, but 1.5 is installed on my system as well.

Can anyone help? Thanks!

    
import javax.swing.JOptionPane;
 
public class Compare 
{
  public static void main(String[] args)
  {
    int number1, number2;
    String firstNumber, secondNumber;
      
    firstNumber = JOptionPane.showInputDialog("Enter the first integer:");
    secondNumber = JOptionPane.showInputDialog("Enter the second integer:");
    
    number1 = Integer.parseInt(firstNumber);
    number2 = Integer.parseInt(secondNumber);
    if (number1 > number2)
      JOptionPane.showMessageDialog(null, number1 + " is larger", "Compare Two Numbers", JOptionPane.INFORMATION_MESSAGE);
    
    if (number1 < number2)
      JOptionPane.showMessageDialog(null, number2 + " is larger", "Compare Two Numbers", JOptionPane.INFORMATION_MESSAGE);
      
    if (number1 == number2)
      JOptionPane.showMessageDialog(null, "These numbers are equal", "Compare Two Numbers", JOptionPane.INFORMATION_MESSAGE);
      
    System.exit(0);
  } 
}

[Campbell Ritchie]

. . . and what are you writing in the blank space on the input dialogue?

[Scott Cook]

must be the version...

I compiled and ran using 1.5.0_07 and it worked just fine

[Maureen Augustus]

Hmmm, I'll have to figure out why it doesn't like 1.4.2. I got the example from a book written for 1.3, so I would think it wouldn't require a later version. Unfortunately, I need to learn 1.4.2 specifically, since that is the version used on the program I was hired to maintain and word here is that there are no plans to upgrade to 5 or 6 anytime soon.

Campbell, to answer your question, I would type an integer in the dialog if it showed a box in which to do so. However, the entire dialog is blank.

Thanks for your help, guys.

[Scott Cook]

maybe they would let you install 1.5 in your local area, just to see if it works?

Either that or re-install 1.4.2

All I know is that your code is fine, so there must be something wrong with your environment or JVM

Scott

[Campbell Ritchie]

I think Scott Cook is right.

[Maureen Augustus]

In case anyone's still interested, I got the answer to this problem from someone on the Sun forums. I had to reduce my graphics acceleration by about three notches to make it work.

Thanks for your help!