The regex specifies two capturing groups: number 1 is (Java( language)2), which matches Java language language, and number 2 is ( language), which matches a space character followed by language.

The Java Tutorials‘s lesson on regular expressions introduces Java’s support for regular expressions via the java.util.regex package and highlights the two classes Pattern and Matcher.

Remove parameters using regular expressions. The other option to remove parameters in Java or Python is to use a regular expression to delete the matching portion of the input string. This method is ...