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

class Main {
  public static void main (String[] args) throws java.lang.Exception {
     String str = "\\u003c";
     Matcher m = Pattern.compile("(?i)\\\\u([\\da-f]{4})").matcher(str);
     if (m.find()) {
	String a = String.valueOf((char) Integer.parseInt(m.group(1), 16));
	System.out.printf("Unicode String is: [%s]%n", a);
     }
  }
}