Java Regular Expression Utils

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang.StringUtils;

public class RegExUtils {
 
 public static boolean matches(String line, String regEx) {

  boolean regExpMatches = false;

  if (StringUtils.isNotBlank(line) && StringUtils.isNotBlank(regEx)) {
   if (line.matches(regEx)) {
    regExpMatches = true;
   }
  }
  return regExpMatches;
 }
 
 public static List<String> getMatches(String line, String regEx, int group){
  Pattern pattern = Pattern.compile(regEx);
  Matcher matcher = pattern.matcher(line);
  List<String> matches = new ArrayList<>();

  while (matcher.find()) {

   matches.add(matcher.group(group));
  }
  
  return matches;
 }

 public static String getMatchedContent(String line, String regEx){
  Pattern pattern = Pattern.compile(regEx);
  Matcher matcher = pattern.matcher(line);
  String matchedContent = null;
  if (matcher.find()) {
   matchedContent = matcher.group();
  }
  
  return matchedContent;
 }
}