Categories that behave like the java.lang.Character boolean ismethodname methods (except for the deprecated ones) are available through the same \p prop syntax where. In a regular expression, parentheses can be used to group regex tokens together and for creating backreferences. Backreferences allow you to reuse part of the regex. Next: From: Tom Lane: Date: 2000-07-14 21:19:18: Subject: Re: Escaping parenthesis in regular expressions. Previous: From: Yves Dorfsman: Date: 2000-07-14 18:19:38 Literal Characters. The most basic regular expression consists of a single literal character, such as a. It matches the first occurrence of that character in the string. However, if the opening bracket is escaped by passing it to the Escape method, the regular expression succeeds in matching comments that are embedded in the input string. EVALUATION javac processes \( and tries to interpret the escape sequence. In order for the escape sequence to be processed by the regex parser, \\( must be used. I tried different ways to escape the parentheses using regex in JavaScript but I still can't make it work. This is the string: abc(blah (blah) blah().).def(blah. i have this little class to make a multiple replace on a string: import java.util.HashMap; import java.util.Map; import java.util.regex.Matcher; import java.util. Hello Developers, I am currently coding a validation function which can check form fields against a pattern to make sure that it is correctly formatted Well, what escape character are you using? And I am assuming that you mean the quote, there is no reason to escape a parenthesis in a Java string.