import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "\\G\\s*+((\\((?:\\s*+(?2)\\s*+(?(?!\\)),)|\\s*+[^()',\\s]++\\s*+(?(?!\\)),)|\\s*+'[^'\\r\\n]*+'\\s*+(?(?!\\)),))++\\))|[^()',\\s]++|'[^'\\r\\n]*+')\\s*+(?:,|$)";
final String string = "65.54.188.59 - - [13/Jul/2005:04:10:13 +0200] \"GET /fusel/Suchmaschinen.html HTTP/1.0\" 404 302 \"-\" \"msnbot/1.0 (+http://search.msn.com/msnbot.htm)\"";
final String subst = "\\n";
final Pattern pattern = Pattern.compile(regex);
final Matcher matcher = pattern.matcher(string);
// The substituted value will be contained in the result variable
final String result = matcher.replaceAll(subst);
System.out.println("Substitution result: " + result);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html