Still get a NullPointerException

If the user clicks on the cancel button in a JOptionPane box I get a NullPointerException. Even when I added the code for the Cancel button I still get a NullPointerException.

public String askQuestion(String question)

{

String answerToQuestion = JOptionPane.showInputDialog(question);

while (answerToQuestion.equals("") || Integer.parseInt(answerToQuestion)

==JOptionPane.CANCEL_OPTION))

{

answerToQuestion = JOptionPane.showInputDialog(question);

}

return answerToQuestion;

}

What's the problem?

Thanks

[820 byte] By [java4life87a] at [2007-10-3 3:30:34]