Expression Language 3.0
The Expression Language 3.0 Specification was developed under JSR 341. This section gives you only an overview of improvement in the API. The complete document specification (for more information) can be downloaded from http://jcp.org/aboutJava/communityprocess/final/jsr341/index.html.
What is Expression Language?
Expression Language (EL) is a language used to access and manipulate data in your JSP or JSF web pages. It provides a simple way to:
Read/write data from/to JavaBean component properties
Invoke static and public methods
Perform arithmetic, relational, logical, and conditional operations
An EL expression looks like ${expr} or #{expr}. The former syntax is often used for immediate evaluation while the latter is used for deferred evaluation. The following code demonstrates how to access a JSF bean property from a JSF page and how to perform an operation between two integers using EL expressions:
<h:form>
<h:outputText
id="beanProperty...
