String s="Swamy Application";
s=s.replaceAll("\\S"," ");
system.out.println(s);
Should return String but we are getting empty
I need explanation What happening in \\S.
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Sahil Gulati
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1RT*M. What did you mean the code to do when you wrote it? – Biffen Mar 01 '17 at 05:58
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\S matches any non-whitespace character: http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html – Harald Gliebe Mar 01 '17 at 05:59
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use `\\s` instead – m87 Mar 01 '17 at 06:01
2 Answers
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String.replaceAll() takes a regex as first parameter and the replacement text for all matches of that regex as second parameter. Here, you have given \\S as the first parameter, which matches every non-whitespace character. The replacement string given is a whitespace. So the returned String would be having whitespaces only.
Naveed S
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\S matches any non-whitespace character which is leading to replace the alpha characters in the string to whitespace.
"Swamy Application" -> " "
More about this at source
If you are trying to replace the whitespace character from the string then use:
"\s"
else if you are trying to replace the only S character from the string then use:
"S"
Amar Myana
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