why tomcat return me this error!!!!

[Sasan torabkheslat]

thank for any opinion!

org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/fmt cannot be resolved in either web.xml or the jar files deployed with this application
	org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:51)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:116)
	org.apache.jasper.compiler.TagLibraryInfoImpl.generateTLDLocation(TagLibraryInfoImpl.java:317)
	org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:148)
	org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:430)
	org.apache.jasper.compiler.Parser.parseDirective(Parser.java:499)
	org.apache.jasper.compiler.Parser.parseElements(Parser.java:1558)
	org.apache.jasper.compiler.Parser.parse(Parser.java:130)
	org.apache.jasper.compiler.ParserController.doParse(ParserController.java:245)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:101)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:161)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:326)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:307)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:565)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:309)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

[Vijay Tidake]

Hi,

Please see the links 1,2,3

Thanks