This tutorial shows you how to create a simple Struts application that has two Web pages, an action mapping, and a form bean. You will use the Web diagram editor to help you visualize the process. The application contains one Web page that takes a year, month, and date as input and manipulates the data to compute the day of the week. If the input is valid, the computed value is displayed on an output Web page; if the input is not valid, an error message is displayed on the input page. You will also learn how to set up the test environment and test your application.