public   class  SSO2Ticket
{
     public   static   final   int  ISSUER_CERT_SUBJECT =  0 ;
     public   static   final   int  ISSUER_CERT_ISSUER =  1 ;
     public   static   final   int  ISSUER_CERT_SERIALNO =  2 ;
		
     public   static  String SECLIBRARY ;
     public   static  String SSO2TICKETLIBRARY = "sapssoext";    
    
     static  {
         if  (System.getProperty("os.name").startsWith("Win"))  {
            SECLIBRARY = "sapsecu.dll";
        }  else  {
            SECLIBRARY = "libsapsecu.so";
        }
        System.loadLibrary(SSO2TICKETLIBRARY);
         if (!init(SECLIBRARY)) {            
            System.out.println("Could not load library: " + SECLIBRARY);
            System.exit(- 1 );            
        }			            
    }

    
     private   static   native   synchronized   boolean  init(String seclib);
    
     public   static   native   synchronized  Object[] evalLogonTicket(
        String ticket,
        String pab,
        String pab_password)
         throws  Exception;    
}

 public   class  GetTicketServlet  extends  HttpServlet
{
     public   static   void  doService(HttpServetRequest req, HttpServletResponse res) {
        String ticket = req.getParameter("ticket");
        Object o[] = SSO2Ticket.evalLogonTicket(ticket, "verefy.pse" ,  null );
        res.getWriter().pritnln(o[ 0 ]); // Login id
    }
}

Object o[] = SSO2Ticket.evalLogonTicket(ticket, "verefy.pse" ,  null );