Re: Illegal group reference

[Jai B]

I guess the problem is with java.util.regex.Matcher class throwing exception when the regex pattern contains '?' and value contains '$' symbol.
I assume your password had '$' which was the reason it might have been failing.

Try this simle java code:

String s1 = "hello ?";
String s = "rama$a";
System.out.println(s1.replaceFirst("\\?", s));