Are you able to share experience points with other classes?

[Conradus]

For example if I'm a white mage and I kill a mob is there a way so another class can share the exp? A friend told me this was possible not sure if he was blowing smoke or not

Thanks in advance

No. If you earn exp in any way as CNJ/WHM then that's where the experience will go. If it's capped, the exp is lost (so try to avoid turning in quests as a capped class, although level restrictions may not give you a choice. Remember that you can turn in quests as a crafter or gatherer class).