import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?=<)(?:(?=.*?<(?!.*?\\1)(.*>(?!.*\\2).*))(?=.*?>(?!.*?\\2)(.*)).)+?.*?(?=\\1)[^<]*(?=\\2$)";
final String string = "Hey! < <Look,> <ma!> < <no> r<e<c<u<r>s>i>o>n!! > > Woooo\n"
+ "< Matches <can <even\n"
+ "span > multiple > \n"
+ "lines! > yeah buddy!!\n"
+ "<<<<<<<<><<<<<<><<<<<< NO LIMITS!!! >>>>>><>>>>>><>>>>>>>>>>>>>";
final String subst = "";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.DOTALL);
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