JBoss is failing to run JSPs with java.lang.AbstractMethodError

Issue

• Application working fine on tomcat 5.5
• After successfully deploying same application on jboss-eap-5.1.2 when try to hit any jsp page of application it's giving following exception:

"javax.servlet.ServletException: java.lang.AbstractMethodError: javax.servlet.jsp.JspFactory.getJspApplicationContext(Ljavax/servlet/ServletContext;)Ljavax/servlet/jsp/JspApplicationContext;
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:257)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)