public static Clientes sqlLeer(Clientes cli){
        String sql="SELECT * FROM clientes WHERE idclientes = '"+cli.getId()+"'";      
        if(!BD.getInstance().sqlSelect(sql)){
            return null;
        }
        if(!BD.getInstance().sqlFetch()){
            return null;
        }
        
        cli.setRut(BD.getInstance().getInt("rut"));
        cli.setDv(BD.getInstance().getString("dv").charAt(0));
        cli.setNombre(BD.getInstance().getString("nombre"));
        cli.setApe_paterno(BD.getInstance().getString("ape_paterno"));
        cli.setApe_materno(BD.getInstance().getString("ape_materno"));
        cli.setEmail(BD.getInstance().getString("email"));
        cli.setFecha_nac((BD.getInstance().getString("fecha_nac")) );
        cli.setTelefono(BD.getInstance().getString("telefono"));
        cli.setSexo(BD.getInstance().getString("sexo").charAt(0));
        cli.setDireccion(BD.getInstance().getString("direccion"));
        return cli;
    }