hello all

i am playing with one regular expression using Java programming language (JDK 1.6) and i am unable to understand how (rather why!) it works.

here is my code

String text = "I am also known as John,PP)";
	String pattern = "John([\\s\\u00A0)\\}\\]\"'-/\\\\.:;!'$?]|$)";
 
	Matcher matcher = Pattern.compile(pattern,
		Pattern.UNICODE_CASE | Pattern.CASE_INSENSITIVE).matcher(text);
	while (matcher.find())
	{
	    String foundString = matcher.group();
	    System.out.println(foundString);
	}

above code when executed prints "John,"
what i am unable to understand is ... though the pattern does not have any comma (,) why the string "John," is getting matched ???

any help would be really appreciated ....

thanks
~PP