AXIS2 and JDK 1.5

Dear AXIS2 community, a question:

According to "System Requirements" 
(http://axis.apache.org/axis2/java/core/docs/installationguide.html#requirements), 
AXIS2 should be OK with JDK 1.5.

However, looking at the source code, I see many references to 
XMLStreamException.  This class is not available until JDK 1.6 
(http://docs.oracle.com/javase/6/docs/api/javax/xml/stream/XMLStreamException.html).

So is the latest AXIS2 release compatible with JDK 1.5?  If not, which 
version is?

Thanks in advance,
-- 
Dave Cherkassky
   DJiNN Software Inc
   VP of Software Development