try{
        Class.forName("org.postgresql.Driver");
        c = DriverManager
                .getConnection("jdbc:postgresql://localhost:5432/postgres","postgres","12345");

    } catch (Exception e){
        e.printStackTrace();
        System.err.println(e.getClass().getName()+": "+e.getMessage());
        System.exit(0);
    }
    System.out.println("ACCESO TOTAL A LA BASE DE DATOS");
    }
}