Figure 2: OmniOpera's WSDL Viewer.
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4) Download newest WSDL, and place in the same directory
WSDL stands for Web Services Description Language. The WSDL is an XML-based language that describes how a web service will behave. Amazon is being a good web services provider with this XML document. The Amazon API Developer's Guide says that the WSDL is at: http://soap.amazon.com/schemas3/AmazonWebServices.wsdl
The WSDL gives the service provider (Amazon) a method to describe how the web service will function when accessed by the client. The WSDL is merely a description but it's a very rich description.
Download the WSDL file and place it in your copy of the JavaCodeSample directory. Open the WSDL in your favorite editor (I like GVIM). You'll find the document dense and difficult to parse. I found OmniOpera, a free tool that let's you view the WSDL in a very readable format. (OmniOpera only runs as an Internet Explorer plug-in.)
Figure 2: OmniOpera's WSDL Viewer.
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