whats the code to give a player exp level

You may try to give player XP indirectly by spawning XP orbs at their position and setting their (orb) values to your desired value.

Extends EntityXPOrb

And you may find out usage / constructor of it.

Im sorry Im still a tab bit new, how would I go about doing that.

 

Now here is a step by step tutorial of making such custom entity.

First, think of what your entity should be called in the code.

It can be like EntityCustomXPOrb or something you wish.

Second, when making (public class "Name"), be sure it extends (extends EntityXPOrb) so that you can have everything in (EntityXPOrb) ready for your usage.

And because you inherit from a pre-defined class (or you can say it is vanilla) you can skip the annoying stuff about update movements, renders, textures, and eventually what the xp orb should do with the player.

Third, make constructor "Name"(World world, double x, double y, double z, int xp), then add super(world, x, y, z, xp) to tell Forge / Minecraft you now have a new entity which is similar to those in vanilla Minecraft, and tell Minecraft to make a new EntityXPOrb based on your values.

Finally, call world.spawnEntityInWorld(new "Name"(this.worldObj, x, y, z, xp)); when you want to spawn your entity.

 

I hope this helps.

Minecraft has in the EntityPlayer class methods for adding experience to player

so all you would need to do is add player.addExperience where player is an instance of EntityPlayer. Or for levels it's player.addExperienceLevel

 

A lot less complicated than spawning in entities

yeah, use the latter one instead.

We are learning modding together so let's compare methods to see of which one is better.