gaius marius answer is really approximative and can be confusing for beginners
you never find "2 pistil hairs" when you try to sex plants between the 5th and 8th internode ,and more for pure sativas ,sometimes the 12th or 15 th node
pistils appears only one or two weeks after sexing is possible with a magnifier x10 or x20
in this case you only search for irregular boarders ,or a stem if you look for a male ,and no stem and regular boarders for females .the male organs look like the number "6" in negative or reverse mode .
your plant is totally male .hemaphrodism is always possible later .changing sex is always possible later ,for example its a recurrent trait in lebanese landrace strain .2 nodes like you male ,and all the nodes after until the end of flowering will be female .