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Re: Beginnerquestion about if (personName==null || personName.equals(""))
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Re: Beginnerquestion about if (personName==null || personName.equals(""))

  • Subject: Re: Beginnerquestion about if (personName==null || personName.equals(""))
  • From: Art Isbell <email@hidden>
  • Date: Thu, 6 Sep 2007 23:59:36 -1000
On Sep 6, 2007, at 11:44 PM, Rainer User wrote:

Why i have to use personName.equals("")   +and+    personName==null to detect if personName is empty or not?

personName could have a null value or it could be a non-null String object whose value is the empty string.  Both situations indicate a personName with no value, so both conditions need to be tested.

Aloha,
Art

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 >Beginnerquestion about if (personName==null || personName.equals("")) (From: Rainer User <email@hidden>)

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