env.put(Context.INITIAL_CONTEXT_FACTORY,   "com.sun.jndi.fscontext.RefFSContextFactory");
env.put(Context.PROVIDER_URL, "file:./");
      
     try {
      ic =  new  InitialContext(env);
   
      PGPoolingDataSource source =  new  PGPoolingDataSource();
      
      source.setDataSourceName("A Data Source");
      source.setServerName(host);
      source.setDatabaseName(db);
      source.setUser(user);
      source.setPassword(pass);
      source.setMaxConnections( 10 );    
      ic.rebind("Data", source);     
      ic.close();
 } catch (NamingException e){
    System.out.println(e);
 }

 try {
   envl.setProperty(Context.INITIAL_CONTEXT_FACTORY,   "com.sun.jndi.fscontext.RefFSContextFactory");
      envl.setProperty( Context.PROVIDER_URL,"file:./");     
      ic =  new  InitialContext(envl);
    } catch  (NamingException e) {
       System.out.println(e);
       
    } 

  try  {
      
     Object dd =  ic.lookup("Data");       
     source = (PGPoolingDataSource)dd;
     
    } catch  (NamingException e) {
       System.out.println(e);   
    }