That's easy I can tell you right now.
Knight/Warrior = Strength
Smuggler/Agent = Cunning
Consular/Inquisitor = Willpower
Trooper/Bounty Hunter = Aim
If you're a tank = Endurance
I can get that from the tooltip in game, was looking for something a but more in detail like each advanced class based on heal/tank/dps and so on.