[Haskell-cafe] "Good" Java book? (not off-topic)

Hi, cafe, I find myself in the unusual position of having to recommend a few books on Java to people who want to use it professionally. As the people demanding this live in Burundi, I can't really say "Learn Haskell". Odds are they won't find a job there if they don't use mainstream languages. Is there any book on Java that approaches the language in a way that doesn't make programmers impervious to FP and Haskell? Not meaning to insult anybody here, I too learned Java before Haskell. But I also think it made learning Haskell much more difficult. Cheers, Ivan.