Assignment # 3

Learning Goals

• Understand how to pass form data from an html page to a servlet.
• Understand how to create a Java Bean.
• Understand how to populate a Java Bean with data from the form dataset.

Project

This assignment is part of Project#1.

Tasks

• Write a servlet that will accept the input from your Project 1 form.
• Modify the HTML page for your project so that the form submits to your servlet.
• Create a Java Bean that will hold the values of the form elements in your form.
• Include the code in your servlet to populate the bean.
• Add an isValid method to your bean that will perform the following validation:
  1. All required fields contain data (a required field is denoted with a * in the page).
  2. The e-mail field is in the correct format for an e-mail address.
• Invoke the isValid method from your servlet, and display information in your generated html that states the validity of the input data. Identify each field that contains an error.

Hints

• You might include a validation method in the bean for each field whose value you check. The isValid method (also in the bean) might call each of these individual validation methods.
• The bean will be used later in your project when you need to repopulate the JSP form with the data in the beam.
• You can display the data validity messages in a simple html page generated by the servlet (later you will add the validity messages to the regenerated form).
• The e-mail validation can be very simple (e.g., check for the presence of a @ in the middle of the string.