Today I'd like to provide crafting recipes for each spear. You can also go to the links provided at the bottom of the page to view more info on spears.
The wooden spear is very easy to make, as you only need three planks and two sticks to craft! These are cheap and easy materials to obtain. And once thrown, you can retrieve it. But be careful! They can stick into soft blocks or bounce off of your target and hurt you.
The stone spear is fairly easy to make, as you only need three cobblestone blocks and two sticks to craft! These are cheap and fairly easy materials to obtain.
The iron spear can be difficult to make, as you need three iron ingots and two sticks to craft. That means mining is necessary before upgrading to this spear.
The diamond tip spear is difficult to make, as you need three diamonds and iron spears (one per three diamonds) to craft. That means extensive mining is necessary before upgrading to this spear. This spear is very durable, but quite expensive to craft. It takes three diamonds per spear!!