'replacement for: AsyncTask<String, Void, String>

I am studying java.utils.concurrent. It looks like a complete mess to me. AsyncTask is old and I should use java.utils.concurrent for this. But it does not give the answer What I should use. There are is a lot of information in this package but not what I am looking for. I think I have to collect a lot of information to do what was already in Java but replaced by a complete package.



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