Description: Learn how to evaluate JSP expressions dynamically, use the Expression Language (EL) in XML configuration files, and optimize EL usage when presenting SQL result sets.This article presents the EL API, using it in several utility classes whose static methods are called from JSP pages using EL functions. The article also shows several practical uses of the EL API in JSP pages and in custom tag handlers based on the Simple Tags API, which is another new feature of JSP 2.0. One of the examples demonstrates how the JSP EL can be used in XML configuration files.