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SOAP has two syntaxes for describing the data in these elements, Section 5, which is a clear descendant of the XML RPC system, and XML Schema, which is the newer (and usually better) system.
Axis handles the magic of converting Java objects to SOAP data when it sends it over the wire or receives results.
All these files can be packaged into a web application, axis.war, that can be dropped into a servlet container. You can add your own by adding new compiled classes to the Axis webapp and registering them.
Before you can do that, you have to install it and get it working.
It is also useful to have written a simple web application, as this will give you some knowledge of how HTTP works, and how Java application servers integrate with HTTP.
You may find the course notes from Mastering the World Wide Web useful in this regard, even though Axis is only introduced in lecture 28.
You should also have an application server or servlet engine and be familiar with operating and deploying to it.
If you need an application server, we recommend Jakarta Tomcat.
Apache Axis is an Open Source SOAP server and client.
Axis implements the JAX-RPC API, one of the standard ways to program Java services.
If you look at the specification and tutorials on Sun's web site, you will understand the API.
Sooner or later you will be forced to discover these details, and there are easier places to learn than Axis.
If you are completely new to Java, we recommend you start off with things like the Java Tutorials on Sun's web site, and perhaps a classic book like Thinking in Java, until you have enough of a foundation to be able to work with Axis.