title: Eclipse -The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
body: <p>I read all the posts regarding this error but for some reason it does not work for me...</p>
  
  <p>Here is my folder structure,</p>
  
  <p><img src="https://i.stack.imgur.com/VMzZA.png" alt="enter image description here"></p>
  
  <p>I get the error as mentioned in my title,</p>
  
  <p>The code of the if_tag.jsp,</p>
  
  <pre><code>&lt;%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;&lt;c:if&gt; Tag Example&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;c:set var="salary" scope="session" value="${2000*2}"/&gt;
  &lt;c:if test="${salary &gt; 2000}"&gt;
     &lt;p&gt;My salary is: &lt;c:out value="${salary}"/&gt;&lt;p&gt;
  &lt;/c:if&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>The jstl libraries are located in -</p>
  
  <pre><code>C:\tomcat\webapps\ROOT\WEB-INF\lib
  </code></pre>