diff --git a/4. Tips & Tricks for working with Jython.md b/4.-Tips-&-Tricks-for-working-with-Jython.md
similarity index 94%
rename from 4. Tips & Tricks for working with Jython.md
rename to 4.-Tips-&-Tricks-for-working-with-Jython.md
index 646b373..c3e0073 100644
--- a/4. Tips & Tricks for working with Jython.md	
+++ b/4.-Tips-&-Tricks-for-working-with-Jython.md
@@ -26,6 +26,13 @@ If you want to catch all exceptions (e.g. for debugging), **do not `except Excep
 Since we're using jython, this will not catch Java exceptions.  
 Instead, use `except` and print the traceback. This will give you some more deatails:  
 ```python
+# bad
+try:
+  #code
+except Exception, e: # will not catch Java Exceptions
+  print(e)
+
+# good
 from traceback import format_exc as trace
 try:
   #code