java_gen: fix small formatting error
diff --git a/java_gen/templates/of_class.java b/java_gen/templates/of_class.java
index 4057b3d..b35df1c 100644
--- a/java_gen/templates/of_class.java
+++ b/java_gen/templates/of_class.java
@@ -430,5 +430,4 @@
         return result;
     }
 
-
 }