1. Publishing and Consuming Web services
Chapter 19 + other material (references provided)

2. References
For the demos I have used Netbeans IDE. You can very well use any other IDE such as Eclipse or use command line on Linux system. I have no recommendation.
This is tutorial I demoed 2011/2/16
This is tutorial I will be demoing today 2011/2/21

3. Web services Here are some examples of published web services:
European Bioinformatics Institute:
NCBI (National Center for Biotechnology Information): Blast: (Basic Local Alignment Tool)
Of course we discussed amazon web services

4. Simple Web services: Class Demo 2011/2/16

5. Demo 2011/2/21 (unscheduled)
REST API: you will process restResponse and extract the result object from
the response

6. How to consume a web services?
Once you get the WSDL that could provide the address you need for the SEI or service end point
See