http://java.sun.com/jstl/core cannot be resolved

Friends,
I am getting the following error when I run the HTML and JSP with JSTL. I am working on Eclipse Indigo and tomcat7.0. I copied the following Jar files to my WEB-INF lib folder.

jstl.jar
jstl-api-1.2.jar
jstl-impl-1.2.jar
standard.jar

The error is as follows.

org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
	org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:56)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:410)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:117)
	org.apache.jasper.compiler.TagLibraryInfoImpl.generateTLDLocation(TagLibraryInfoImpl.java:311)
	org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:152)
	org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:410)
	org.apache.jasper.compiler.Parser.parseDirective(Parser.java:475)
	org.apache.jasper.compiler.Parser.parseElements(Parser.java:1427)
	org.apache.jasper.compiler.Parser.parse(Parser.java:138)
	org.apache.jasper.compiler.ParserController.doParse(ParserController.java:242)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:102)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:198)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:373)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.25 logs.

Please tell me what else should I copy??

thank you

You should only have two jar files.

And your JSTL URI is wrong.

Thank you for the reply. I changed to jsp/jstl and tried too. but its giving the same Exception. One thing I observed is.. I copied the jar fiels to Lib folder in Src and when I tried to copy these jars to WEB-INF lib folder it asked me "Use as Srource Folder" and I selected that thinking all teh Source library files will be used here. Now its not allowing me to add any files to WEB-INF lib folder at all.

What should I do? I see the WEB-INF lib directory is empty and its not letting me copy anything here.
Please help
Thank you

What is the "it" that's not "letting" you copy?

If the jars aren't in WEB-INF/lib, it's not going to work.

When I am trying to copy the jar into WEB-INF lib its giving me "Cannot copy Clipboard contents into the selected elements"

Thank you

I presume you're using Eclipse?
Do you have the Eclipse "Java Web Developer Tools" installed as a plugin?

The WEB-INF/lib folder should not be a source folder.
If it get added as one, then remove it (should be in the project properties: java build path: "source" tab)

Remove the standard.jar. It's apparently of old JSTL 1.0 version when the TLD URIs were without the /jsp path. With JSTL 1.2 as available here you don't need a standard.jar at all. Just the jstl-1.2.jar in /WEB-INF/lib is sufficient.

Thank you all but my problem is not solved yet.
@Stefan Evans

I did check in Project-properties--Java Build Path--Source---
Under that I see Souce folders on Build path is empty. I removed WEB-INF in that. Now its empty. and The default Output folder is set to "Proj1/build/classes", proj1 is the project I created.

Now please tell me what should I be doing to copy the jar to lib. As when I rt click on WEB-INF--Lib and go to Build path I see 2 options

1. USe Source as build path
2. Configure buildpath

previous I set source as build path now I removed that.

Now when I go to Configure Build path I see Java Build Path where Source is empty and default oouput folder is Proj1/build/classes and in Libraries I see all the jars and class folders on the build path . What does this mean?? Are these jars in the source forlder and how do I copy them to WEB-INF-- Lib??

Please help
Thank you for your support

As this is about configuring the IDE, it has been moved to a more appropriate forum.

Thank you all. Its working now. As Stefan said I remover WEB-INF from Source and just added MyProj/src in build path.
Its working
Thank you