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Java replaceAll ("\\ s +") vs replaceAll ("\\\\ s +")

What is the difference between replaceAll("\\s+")

and replaceAll("\\\\s+")

? I usually use \\s+

, but sometimes I see \\\\s+

.

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1 answer


\\s+

→ replaces 1 or more spaces.

\\\\s+

→ replaces a literal \

followed one or more times.

Code:



public static void main(String[] args) {
    String s = "\\sbas  def";
    System.out.println(s);
    System.out.println(s.replaceAll("\\s+", ""));
    System.out.println(s.replaceAll("\\\\s+", ""));

}

O / P:

\sbas  def
\sbasdef
 bas  def
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