[java] What does this expression language ${pageContext.request.contextPath} exactly do in JSP EL?

I have a web app, where I have different navigation anchor tags such as Home, Profile and etc.

What I want:

When I press anchor tags like home or profile. I just want to ensure that current user gets its information in that Tags/JSP Page.

Sample Example that I am trying:

<a  href="${pageContext.request.contextPath}/JSPAddress.jsp">Profile</a>

use request.getContextPath() instead of ${pageContext.request.contextPath} in JSP expression language.

<%
String contextPath = request.getContextPath();
%>
out.println(contextPath);

output: willPrintMyProjectcontextPath

Include <%@ page isELIgnored="false"%> on top of your jsp page.

For my project's setup, "${pageContext.request.contextPath}"= refers to "src/main/webapp". Another way to tell is by right clicking on your project in Eclipse and then going to Properties: