Exception when attempting to register

[mrkev]

org.apache.jasper.JasperException: An exception occurred processing JSP page /save-profile-changes.jsp at line 21

18:    User u = UserController.findUser(em, netId);
19:    if (request.getParameter("NewUser")!=null && 
20:            request.getParameter("NewUser").length() > 0 && 
21:            s.getName() != request.getParameter("NewUser")){
22:        StudentController.editName(em, s, request.getParameter("NewUser"));
23:    }
24:    if (request.getParameter("email").length() > 0 && 


Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
    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:727)
root cause

java.lang.NullPointerException
    org.apache.jsp.save_002dprofile_002dchanges_jsp._jspService(save_002dprofile_002dchanges_jsp.java:82)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
    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:727)