Can we say "i dislike coffee?How to use 'dislike'in communication?

Yes you can.

The word "dislike" can be used as a verb along with an object, as in: "I dislike coffee," or "John dislikes his job." It can also be a noun: "I have a strong dislike of cold weather."

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Originally Posted by Curlyben

Yes you can.

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Can you please explain in detail?

I think that in the US anyway, dislike has a slightly more formal and stilted tone than what would usually be just 'I don't like.' I can't see myself saying 'I dislike coffee' in conversation. I use it as a noun for emphasis on occasion, such as 'I have a strong dislike of shopping malls' or even more emphasis, 'I have an intense dislike of shopping malls.'
To add emphasis to it as a verb (I strongly dislike shopping malls) sounds a bit awkward to me, even if correct usage, although I think I have used it that way with the adverb 'emphatically.' 'I emphatically dislike shopping malls.' This is nit picking and possibly just me, but I thought I'd mention it.