// URL that generated this code:
// http://txt2re.com/index-java.php3?s=14:Mar:2019%20%22This%20is%20an%20Example!%22&13&-34 

import java.util.regex.*;

class Main
{
  public static void main(String[] args)
  {
    String txt="14:Mar:2019 \"This is an Example!\"";

    String re1="((?:(?:[0-2]?\\d{1})|(?:[3][01]{1})))(?![\\d])";	// Day 1
    String re2=".*?";	// Non-greedy match on filler
    String re3="(l)";	// Any Single Word Character (Not Whitespace) 1

    Pattern p = Pattern.compile(re1+re2+re3,Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
    Matcher m = p.matcher(txt);
    if (m.find())
    {
        String day1=m.group(1);
        String w1=m.group(2);
        System.out.print("("+day1.toString()+")"+"("+w1.toString()+")"+"\n");
    }
  }
}

//-----
// This code is for use with Sun's Java VM - see http://java.sun.com/ for downloads. 
//
// Paste the code into a new java application or a file called 'Main.java'
//
// Compile and run in Unix using:
// # javac Main.java 
// # java Main 
//