Expression Language, referred to as EL,
was first introduced in JSTL 1.0, and later included in JSP 2.0.
A variant of the EL was used in JSF 1.0. In
JSP 2.1, JSF 1.2 and JSTL 1.2, a unified EL was defined.
The JSP, JSTL, and Faces expert group felt that EL is useful beyond their specifications. JSP 2.1 MR includes features that enable current EL to be a pluggable module.
One place to learn about EL is to start with The Java EE 5 Tutorial. Chapter 5 provides an excellent introduction to JSP 2.1 and EL.
The official documentation can be downloaded from JCP JSR 245 site. The EL spec can be downloaded here. Javadocs for the EL API can also be found from Java EE API.
The JSP, JSTL, and Faces expert group felt that EL is useful beyond their specifications. JSP 2.1 MR includes features that enable current EL to be a pluggable module.
One place to learn about EL is to start with The Java EE 5 Tutorial. Chapter 5 provides an excellent introduction to JSP 2.1 and EL.
The official documentation can be downloaded from JCP JSR 245 site. The EL spec can be downloaded here. Javadocs for the EL API can also be found from Java EE API.
