diff --git a/bin/jorpelu/com/Tree.class b/bin/jorpelu/com/Tree.class
index 1fd8821..4748537 100644
Binary files a/bin/jorpelu/com/Tree.class and b/bin/jorpelu/com/Tree.class differ
diff --git a/src/jorpelu/com/Tree.java b/src/jorpelu/com/Tree.java
index 1f9553c..6a6b367 100644
--- a/src/jorpelu/com/Tree.java
+++ b/src/jorpelu/com/Tree.java
@@ -1,31 +1,27 @@
 package jorpelu.com;
-
 import java.io.File;
+import java.io.IOException;
 
 
 public class Tree {
-
-	public static void main(String[] args) {
-		 String ruta=".";
-		    if (args.length>=1) ruta = args[0];
-		    File fich = new File(ruta);
-		    if(!fich.exists()) {
-		      System.out.println("No exite "+ruta);
-		    } else {
-		      if(fich.isFile()) {
-		        System.out.println(ruta+" es un fichero");
-		      } else {
-		        System.out.println(ruta+" es un directorio");
-		        File[] ficheros=fich.listFiles();
-		        for (File f:ficheros) {
-		          String textoDescr = f.isDirectory() ? "/" :
-		            f.isFile() ? "_" : "?";
-		          System.out.println("("+textoDescr+") "+f.getName());
-		          
-		        }
-		      }
-		    }
-
-	}
+	
+	public static void main(String[] args) throws IOException {
+        printFile(new File("."), "");
+    }
+		
+	public static void printFile(File f, String spaces) {
+		
+        System.out.println(spaces.concat(File.separator).concat(f.getName()));
+        if (f.isDirectory() && f.canRead()) {
+        	
+            for (File file : f.listFiles()) {
+            	System.out.print("|");
+                printFile(file, spaces.concat("__"));
+            }
+        }
+ 
+    }
+ 
+    
 
 }