java2wsdl task: how could make enum works in java1.6

[haipeng du]

I got error for my enum with java2wsdl task
The class com.XXX.DataSourceType does not contain a default constructor,
which is a requirement for a bean class.  The class cannot be converted into
an xml schema type.  An xml schema anyType will be used to define this class
in the wsdl file.

For java1.6 enum, I can not give any public constructor? what should I do?
Haipeng Du
Salt Lake City