@@ -, +, @@ 
---
 checkstyle.xml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/checkstyle.xml	
+++ a/checkstyle.xml	
@@ -35,7 +35,9 @@ 
 -->
  
   <!-- No tabs allowed! -->
-  <module name="FileTabCharacter"/>
+  <module name="FileTabCharacter">
+    <property name="fileExtensions" value="java"/>
+  </module>
 
   <module name="TreeWalker">
    
--