So, I made a entity, but i have no idea where my texture goes. I made it like this:

@Override
protected ResourceLocation getEntityTexture(Entity var1) 
{
	return new ResourceLocation("resources:assets/Veetimod/textures/Veeti.png");
}

And my path is /src/main/java/resources/assets/Veetimod/textures/Veeti.png

You misunderstood how ResourceLocation works. Your location would mean that the texture is in:

 

src/main/resources/assets/resources/assets/Veetimod/textures/Veeti.png

 

The string before the colon is your mod id, the string after that is the part after

src/main/resources/assets/modId

. Also: Your ModId has to be lowercase.

Thank you, it works now.