import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "^(?<fulldomain>(?<protocol>[a-z]{2,6}):\\/\\/(?:((?<subdomain>[a-z0-9\\-\\.]*\\.){0,99})(?<domain>[a-z\\-0-9]{1,100})\\.(?<extension>[a-z]{1,10})|(?<ipaddress>(?:25[0-5]|2[0-4]\\d|[0-1]?\\d{1,2})(?:\\.(?:25[0-5]|2[0-4]\\d|[0-1]?\\d{1,2})){3})|(?<localhost>localhost))(?<port>\\:[0-9]{1,6}){0,1})\\/?(?<filepath>(?<path>[a-z0-9\\-_%]{1,20}\\/{1}){0,}(?<filename>[a-z0-9\\-_]{1,20}\\.[a-z0-9]{2,6}){0,1}){0,1}(?<route>(\\/[a-z_0-9\\-_]{1,20}){1,}){0,10}(?<query>\\?[a-z0-9%\\+_\\-&=\\.@\\!,\\:]{0,200}){0,1}$";
final String string = "https://test.example.com:3000/path/to/page?q=1234&a=b&d=e\n"
+ "https://lots.of.subs.test.example.com:3000/path/to/page?q=1234&a=b&d=e\n"
+ "http://192.168.100.0:8080/path/to/page?q=123\n"
+ "http://localhost:3000/path/to/page?q=123\n";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
final Matcher matcher = pattern.matcher(string);
while (matcher.find()) {
System.out.println("Full match: " + matcher.group(0));
for (int i = 1; i <= matcher.groupCount(); i++) {
System.out.println("Group " + i + ": " + matcher.group(i));
}
}
}
}
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