Appendix B. HTTP Servlet API Quick Reference
The javax.servlet.http
package allows development of servlets that support the HTTP
protocol. While the core functionality in the
javax.servlet package provides everything
necessary for web development, the specialized classes in this
package automate many otherwise tedious tasks. For example, the
abstract HttpServlet class includes support for
different HTTP request methods and headers. The
HttpServletRequest and
HttpServletResponse interfaces allow additional
direct interaction with the web server, while
HttpSession provides built-in session tracking
functionality. The Cookie class allows you to
quickly set up and process HTTP cookies, and the
HttpUtils class does the same for query strings.
Figure 2.1 shows the class hierarchy of the
javax.servlet.http package.
Figure B-1. The javax.servlet.http package
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