i am aware that kids do throw tantrums. I am just wondering will i spoilt him when he start to throw tantrum when didnt get the stuff he want and i will just buy for him just to stop his tantrum? how do i get rid of the tantrum by not following what he want?

Do both the hard and soft approach. Yes, if you are out with him and he throws tantrums each time and you buy stuffs for him, the child ia smart enough to know and will attack this weak point of yours. You may wish to educate him on this and ahare with him that this isn't the right way to get things he wants. Be firm and exercise what you say. Show him that he needs to be taught what is right and wrong.