diff --git a/Retos/Reto #30 - EL TECLADO T9 [Media]/java/masdos.java b/Retos/Reto #30 - EL TECLADO T9 [Media]/java/masdos.java
index 774533abc8..e86b1f5fb0 100644
--- a/Retos/Reto #30 - EL TECLADO T9 [Media]/java/masdos.java	
+++ b/Retos/Reto #30 - EL TECLADO T9 [Media]/java/masdos.java	
@@ -18,6 +18,10 @@
  */
 public class masdos {
 
+  public static void main(String[] args) {
+    System.out.println(translateT9Code("6-666-88-777-33-3-33-888"));
+  }
+
   public static String translateT9Code(String t9Code) {
     if (!t9Code.matches(
         "^(0|([2-58])\\2{0,2}|([679])\\3{0,3})(-(0|([2-58])\\6{0,2}|([679])\\7{0,3}))*$")) {