Servlets are pieces of Java^TM source code that add functionality to a web server in a manner similar to the way applets add functionality to a browser. Servlets are designed to support a request/response computing model that is commonly used in web servers. In a request/response model, a client sends a request message to a server and the server responds by sending back a reply message.

From the Java Servlet Development Kit (JSDK), you use the Java Servlet API to create servlets for responding to requests from clients. These servlets can do many tasks, like process HTML forms with a custom servlet or manage middle-tier processing to connect to existing data sources behind a corporate firewall. In addition, servlets can maintain services, like database sessions, between requests to manage resources better than Common Gateway Interface (CGI) technologies.

The Java Servlet API is based on several Java interfaces that are provided in standard Java extension (javax) packages.

In this course you will:

• Learn how to use the Java Servlet API
• Create and run a servlet with the JSDK
• Install a servlet in Sun's Java Web Server^TM
• Process parameters from HTML forms
• Manage middle-tier processing

Course Notes
Magercises
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