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

Question

This question already has answers here:

How to escape text for regular expression in Java (8 answers)

Closed 8 years ago.

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 $.

Answer 1

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

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.