Regular expression for detecting round brackets

Question

I have a large array with string. Now, I need to use the string in the array to form patterns. However for the string with round brackets, the constructed patterns don\'t work.

Answer 1

The following is not doing what you want:

 p = p.replaceAll("\\(", "\\\\(");

You are replacing ( with \\\\(. \\\\( compiled in regex is \\(, which basicly means escape the \ and then (, not escape the (. What you are looking for is the following:

 p = p.replaceAll("\\(", "\\(");