Jarvan IV is a champion wich has huge health and average (but good) damage, wich gives you the advantage to build Tanky or Carrier. (You may need a tank on the team, so go build tanky, when you turn yourself into a true tank, believe me, atleast, with those items, they never kill you, they can just kill you if they gank you. And build a carrier when your team needs one!)

My choices for those items is that they're successfull, I play all the time with him and they're always successfull.
But you can always do a change to some items. Like, in the carrier one, instead of Infinity Edge you can make Atma's Impaler. (it's also a good choice)

I chose that skill sequence because, to me, it's more effective. But you can do to your style of gameplay. =)

For Tanky:

Exhaust / Ghost: It's my choice, with exhaust you can do it to an enemy for your team to kill the enemy and ghost is more for running (they can try to gank you or something, so u can run from them, or you can just simply use it to chase an enemy that's dying << but with a tanky u know ur meant to assist ur team).

You can always choose other spells.
The ones I think as off-limits are:
-Clarity;
-Heal;
-Rally;
-Promote;
-Revive.

For Carrier:

Ghost / Flash: My choice, with those spells you can always chase your enemies or run away from them (because as a carrier ur not so resistant as a tanky).

Of course, you can always use others spells.
As off-limits spells are:
-Revive;
-Rally;
-Promote;
-Heal;
-Clarity

Hope this guide helps all Jarvan IV players.

Rendering credits to: Nyoike
(yep, this image is a render!)