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Non viewable chanacters in System.out.println()

 
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I am putting out a string to the dos screen that has a large gap in the middle. The gap is not spaces. Is there an good way to find out what these characters are?
Thanks.
 
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Redirect the output to a file and open that file in some text editor (Textpad or Wordpad. But not Notepad: it doesn't show special characters)
I guess they will be nulls.
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