By the word “Javan” the Hebrews designate not only the Greeks but the: Macedonians, and the whole of that tract which is divided by the Hellespont, from Asia Minor as far as Illyricmn. Therefore the meaning is — the king of Greece.
Related Commentaries of Daniel 8:21
Daniel 8:21
21 And the rough goat is the king of Grecia: and the great horn that is between his eyes is the first king.