Hi guys. I'm writing an email service with java servlets. Now when i try to deploy my project, tomcat gives me an error.

i was thinking it had something to do with my library that can be out of date but after reinstalling the library and adding new Jar files, it doesnt improve.

Here is the error i get:

Java Code:
SEVERE: Servlet.service() for servlet jsp threw exception
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
	at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:51)
	at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
	at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:116)
	at org.apache.jasper.compiler.TagLibraryInfoImpl.generateTLDLocation(TagLibraryInfoImpl.java:315)
	at org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:148)
	at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:429)
	at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:492)
	at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1439)
	at org.apache.jasper.compiler.Parser.parse(Parser.java:137)
	at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:255)
	at org.apache.jasper.compiler.ParserController.parse(ParserController.java:103)
	at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:170)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:332)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:312)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:299)
	at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
	at java.lang.Thread.run(Unknown Source)
Thanks in advance,

Dieter

EDIT: I also tried to google the error, thats how i got the idea to refresh my library