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Review
This article continued to explore Java's Network API by focusing on URIs, URLs, and URNs. You learned about those concepts and how to work with the classes URI and URL (and URL-related classes). Also, you learned about MIME and its relationship to URLs.
Now that you've worked your way through this article, you need to write some code and get your "coding hands" dirty. One way to accomplish that task is to read the following articles and modify each article's code:
The first article shows how to create a custom protocol handler that you can access from the URL class. The second article shows how to write a Java-based WWW server. You can use that WWW server to experiment with the URL and URL-related classes.
This article's introduction referred to RFC 2045—the first part of a five-part RFC series that discusses MIME. Once you finish reading RFC 2045, use the previously mentioned URI to retrieve the other RFCs. (Substitute numbers 2046 through 2049 for 2045.)
Once you complete the aforementioned articles and RFCs, come back and read my third Network API article. That article completes my tour of the Network API by focusing on electronic mail.