Yes, you can. If you have an XML Schema and a WSDL document at the ready,
you can create an Axis-based Web service "top down" from the WSDL
document. The tools will generate a skeletal Java implementation class
with business methods for you to fill in. If you only have an XML Schema
(ie. no WSDL), then you can use the WSDL editor to create a WSDL and then
create a "top-down" service.
To get started, have a look at the "WSDL Editor"  and "Creating Top
Down Web Service"  tutorials.