Homework #4 Spring 2007

Due: Monday April 9

Purpose:

Understand Servlets

Create your own web application
Use cookies or sessions to save state
Interact with a database or use image files

Preparation:

Read chapter 9
Run sample programs

Lesson:

For this assignment you will create a new web application that makes use of servlets and either cookies or a session to track state. Two example applications are shown below. The first application is a mentoring system.

This screen (CSM_AddMentor.html) is used to add mentors to the database:

This screen (CSM_MentorNet.html) is used to query the database:

This screen (returned by the servlet) shows the results:

Cookies are used to save partial selections in case users need to change some of their choices:

Sample application #2 uses images rather than a database. The first screen prompts the user to select a destination:

Pictures are displayed based on the selection:

Cookies are used to avoid repeating destinations that have been visited:

Requirements for your program:

Must be in a new web application (don't just add a servlet to advjhtp1)
Must include at least two methods (e.g., doGet and doPost, or doGet/doPost in two different servlets)
Must use either a database or some image files.
Must make use of cookies or session tracking to preserve state - don't just create the cookies, do something with them (as in the sample programs, the user only needs to enter certain information because other information is retained)
Team projects are OK, but must include at least 3 methods (requires at least two servlets)

Submission:

Create a zip file of your web application. Be sure that it includes web.xml and an sql file if your application uses a database.