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How can I convert a JTextField that's returning null to a different string value?

P: 9
I have a JTextField that I'm not always passing a value to, but it causes an exception to be thrown when the program runs if the person hasn't entered anything into the JTextField. I have some code below that I'm trying to convert a null response into a different String value. Why isn't it assigning stringInput as a String of "0"?

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  1.             String stringInput = " ";
  2.             stringInput = dinnerTextField.getText();
  3.             if (stringInput == null)
  4.                stringInput = "0";
  5.  
Mar 5 '12 #1
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P: 13,264
Maybe stringInput is the empty string "" rather than null.
To handle that you could use

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  1. if(stringInput == null || stringInput.trim().equals("")) {
Mar 5 '12 #2

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