import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?:(?:ftp|https?):\\/\\/|mailto:)(?:\\w+(?::\\w+)?@)?(?:(?:[a-zA-Z\\-][\\w+-\\.]*)|(?:[\\d\\.]+))(?:\\/\\w[\\w\\.\\/%]+)?(?:\\?(?:\\w+=\\w+(?:&\\w+=\\w+)+))?(?:#\\w+)?";
final String string = "ftp://sub.domain\n"
+ "mailto:example@example.com\n"
+ "http://127.0.0.1/index.htm\n"
+ "https://user:password@s--ub.do_main.com/path%20/to/whatever.html?key1=value1&key2=value2#fragment";
final Pattern pattern = Pattern.compile(regex);
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