Difference between http://java.sun.com/jsp/jstl/core and http://java.sun.com/jstl/core -


this question has answer here:

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> //line-1 <%@ taglib uri="http://java.sun.com/jstl/core" prefix="c1" %>  //line-2

is there difference between line-1 , line-2. line-2 in jsp file not giving error line-1 in jsp giving error

can not find tag library descriptor "http://java.sun.com/jsp/jstl/core"

i've seen solution of problem here not understand "facelets"

it true facelets 1.x , 2.x uses different namespaces jstl tag library. less or more namespace bug in facelets 1.x , has been fixed facelets 2.x.

you can find facelets 2.x tags in facelets tag library documentation. facelets don't ship full tag set real jstl taglib. few of <c:xxx> , full set of <fn:xxx> copied facelets. <fmt:xxx>, <sql:xxx> , <xml:xxx> tags not taken on in facelets.

if using (uses jstl 1.2)

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

means use el expressions not need <c:out>. can directly insert el expressions onto jsp page ${propertyname}

while using (uses jstl 1.0 deprecated)

<%@taglib prefix="c" uri="http://java.sun.com/jsp/core" %>

you can not use el expressions directly on jsp page need <c:out>. el expressions on page not work. e.g. <c:out value=”${propertyname}”>.

also web-app version (found in web.xml) should down 2.3 use http://java.sun.com/jsp/core again old.

conclusion:

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> - can use el directly

<%@taglib prefix="c" uri="http://java.sun.com/jsp/core" %> - can not use el directly


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