Regex expressions in Java, \\s vs. \\s+

Question

Can anyone help me understand the difference between these expressions:

x = x.replaceAll("\\s", "");

x = x.replaceAll("\\s+", "");

Answer 1

Basically, \\s helps us to match for the single whitespace character whereas, \\s+ helps us to match the sequence of more than one whitespace character. It would be more efficient if you use \\s+.

I hope this will help.

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