Close!

src/MiCat/MiCat.java

@@ -20,9 +20,10 @@ public class MiCat {
                 contra = leer.next();
                 f0s.write(contra.getBytes());
             }
+            f0s.close();
             System.out.println("No quiero saber mas!");
         }catch(IOException e){
             
-        }
+        }              
     }
 }