<%@ taglib prefix="my" uri="http://jakarta.apache.org/tomcat/jsp2-example-taglib"%> JSP 2.0 Expression Language - Functions

JSP 2.0 Expression Language - Functions

An upgrade from the JSTL expression language, the JSP 2.0 EL also allows for simple function invocation. Functions are defined by tag libraries and are implemented by a Java programmer as static methods.
Change Parameter
foo =

EL Expression Result
\${param["foo"]} ${param["foo"]} 
\${my:reverse(param["foo"])} ${my:reverse(param["foo"])} 
\${my:reverse(my:reverse(param["foo"]))} ${my:reverse(my:reverse(param["foo"]))} 
\${my:countVowels(param["foo"])} ${my:countVowels(param["foo"])}