I do not want to change a string nor do I want to check if it contains white space. Let’s say we have the following strings. Possible Duplicate: If string only contains spaces? To add to @BJorn and @SeanPatrickFloyd The Guava way to do this is: Strings.nullToEmpty(str).isEmpty(); // or Strings.isNullOrEmpty(str); Commons Lang is more readable at times but I have been slowly relying more on Guava plus sometimes Commons Lang is confusing when it comes to isBlank() (as in what is whitespace or not).. Guava’s version of Commons Lang isBlank … Leave a Reply Cancel reply. Here is a simple way to do a check that will work:
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