Regex filtering using JAVA

Question

How do I get a string which is between paranthesis using a regular expression in JAVA? Eg: if I have a string abc(de)gh Then I want the "de" Substing.

Answer 1

Regex: \((?<TEXT>[^()]+)\) or (?<=\()[^()]+(?=\))

Details:

\( matches the character (

(?<TEXT>) Named Capture Group TEXT

[^()]+ Match a single characteras not present in the list

+ Matches between one and unlimited times

\) matches the character )

Regex demo

Answer 2

Try this

public void test1() {

    String str = "abc(de)gh(il)jk";
    String regex = "\\((.*?)\\)";
    Pattern pattern = Pattern.compile(regex);
    Matcher matcher = pattern.matcher(str);

    while (matcher.find()) {
        System.out.println(matcher.group(1)); 
    }

}