Javelin fighter

[Shadowscale]

How would one go about building a fighter who specializes in javelins? I’m not quite sure where to start.

[legomaster00156]

What sources are available? Core only, first party only, some third-party, all third-party?

[Shadowscale]

What sources are available? Core only, first party only, some third-party, all third-party?
First party only

[legomaster00156]

In that case, you're looking at a pretty standard thrown weapons build. Class isn't so important, but full BAB is preferable. Quick Draw and Precise Shot are necessary feats.

[Kurald Galain]

How would one go about building a fighter who specializes in javelins? I’m not quite sure where to start.
Magus with the Card Caster archetype is a good option if you want a more magical fighter (despite the name, this archetype works with any thrown weapon).

Ranged Trip and Ace Trip are interesting feats, regardless of class, and easiest to get on the fighter class.

[Geddy2112]

Magus with the Card Caster archetype is a good option if you want a more magical fighter (despite the name, this archetype works with any thrown weapon).
Second this, or at least getting arcane strike into your build. At lower levels before you have a blinkback belt, returning weapons etc you can just have a bunch of javelins and they are all magical, and so long as your class progresses your caster level(or a racial SLA qualifies you for the feat) it is steady damage that grows with age. If your build has nothing else that needs a swift action, it is a pretty solid choice. Also for whatever reason you are denied your weapon of choice, you can pick up anything and make it magical.