I just got a kitten today and I have a 1 year old male cat .and he don't seem to like the kitten. How long will it take for him to accept the kitten?

Why do you assume he will ever like the kitten. Is the kitten a male or female ? How have you been introducing them ?

You have to introduce them gradually if you have any hope of their getting along together. Here's a web site to read how to do that --

Introducing a New Cat to Other Pets : The Humane Society of the United States