How Greece got the name Greece?

The word Greek was used from the Latins. According to Mythology, it comes from Graekon, son of Defkalion and Pandora. Aristotle mentions that they were living in Greece and later were named Hellines.
Hellas is the formal name of the country and Hellenas is the name for a Greek. It is used from 1000 BC non-stop.
Inside Greece it is called Hellas,and this is the UN name. Because of the Roman Empire the term Greece was used abroad. Greek's don't mind if you call their country Greece or Hellas.