> +
> +import java.io.File;
> +import java.io.IOException;
> +import java.util.Collection;
> +import java.util.concurrent.ExecutorService;
> +import java.util.concurrent.Executors;
> +import java.util.concurrent.TimeUnit;
> +import java.util.concurrent.atomic.AtomicLong;
> +
> +import org.apache.commons.io.FileUtils;
> +import org.apache.commons.io.filefilter.CanReadFileFilter;
> +import org.apache.commons.io.filefilter.TrueFileFilter;
> +
> +import joptsimple.OptionException;
> +import joptsimple.OptionParser;
> +import joptsimple.OptionSet;

I have used it some... it's not bad. joptsimple just looks less like magic 
(which I like in examples code).

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