This chapter introduced the concept of component development for use in JSP. The first thing that you learned how to do was use the include directive to insert static text into your JSPs. Following that, we covered how to use the include action to add dynamic processing to the inclusion of external logic in a JSP.
We then discussed the mechanics of using JavaBeans to supply component processing to JSP. You learned how to retrieve data from a form, convert it to the correct data type, and store it in a JavaBean for later retrieval.
Finally, you learned how to store and retrieve data from a database using a JavaBean that was called from inside a JSP page. This is a very common use of component processing in JSP.
