Convert java string to string compatible with a regex in replaceAll [duplicate]

Question

Is there a library or any easy way to convert a string and make sure its compatible as a regex to look for and replace in another string. So if the string is "$money" it would get converted to "\$money". I tried using StringEscapeUtil.escape but it doesn't work with characters such as $.

Packaging

Answer 1

You can use Pattern.quote("$money").

Matter

Answer 2

Prepend the \\Q in front of the string, and \\E at the end:

"\\Q$money\\E"

This tells the regex engine that the string between \Q and \E must be interpreted verbatim, ignoring any metacharacters that it may contain.

Tribunate

Thank you! Apparently this is what Pattern.quote() does. – Packaging

But what if the String contains \\E in it ? – Derry