title: Error 500 Internal Server Error?
body: <p>When I deploy a project in <code>Apache Tomcat 6.0</code> it's working fine. 
  When I deploy the same project in <code>weblogic server 10.3</code> it's showing an error like below:</p>
  
  <blockquote>
    <p>Error 500--Internal Server Error</p>
    
    <p>javax.servlet.ServletException:
    [HTTP:101249][weblogic.servlet.internal.WebAppServletContext@ae43b8 -
    appName: '_appsdir_ab_dir', name: 'ab', context-path: '/ab',
    spec-version: 'null']: Servlet class FirstServlet for servlet
    FirstServlet could not be loaded because the requested class was not
    found in the classpath . java.lang.UnsupportedClassVersionError:
    FirstServlet : Unsupported major.minor version 51.0.</p>
  </blockquote>