JSTL 1.2 (J2EE 5/JSP 2.1) Download:
http://jstl.java.net/download.html
JSTL 1.2 consists of two files (jstl-impl-1.2.jar and jstl-api-1.2.jar) and is available for download at the above link. It should be used for
JSP 2.1 containers such
Tomcat 6.
Older Versions
Be aware that there are
two jar files to the JSTL; generally named jstl.jar and standard.jar. You need both.
Be sure to use the appropriate version of the JSTL for your
servlet container. JSTL 1.1 should used for JSP 2.0 containers such as Tomcat 5 and Resin 3, while JSTL 1.0 should be used for containers supporting JSP 1.n.
JSTL 1.1 (J2EE 1.4/JSP 2.0) Download:
http://archive.apache.org/dist/jakarta/taglibs/standard/
JSTL 1.0 (J2EE 1.3/JSP 1.2) Download:
http://archive.apache.org/dist/jakarta/taglibs/standard-1.0/
Notes on Dynamic Attributes for JSTL Tags
Under JSTL1.1 and JSP2.0 you can use either scriplet expressions such as <%= expr %> or EL expressions like ${expr} for JSTL tag attributes that accept run-time expressions. Most attributes in JSTL tags are enabled for run-time expressions, the most prevalent exceptions being the
var and
scope attributes of tags that accept them.
This is because under JSP 2.0 the responsibility for evaluating the expressions lies with the
container.
Under JSTL1.0 and JSP 1.2, the JSTL is responsible for EL expression evaulation and you need to choose whether you want to use ${expr} or <%= expr %> notations.
This is why two version of each tag set are provided; for example the
c library for EL expressions, and the
c-rt library for use with scriptlet expressions.
JspFaq SetupJstlForJsp2 
