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Avoid `Boolean.box`

I call the java method from io.netty.bootstrap.BootStrap, which has the following signature:

public <T> B option(ChannelOption<T> option, T value)

I use the following code to call this method:

b.option(ChannelOption.SO_KEEPALIVE, true);

And this does not compile with the following error:

Error:(57, 30) type mismatch;
 found   : io.netty.channel.ChannelOption[Boolean]
 required: io.netty.channel.ChannelOption[Any]
Note: Boolean <: Any, but Java-defined class ChannelOption is invariant in type T.
You may wish to investigate a wildcard type such as `_ <: Any`. (SLS 3.2.10)
      b.option(ChannelOption.SO_KEEPALIVE, true); // (4)
                         ^

I don’t quite understand what this says, but I understand that it is complaining about getting a boolean, since it was parameterized Anyinstead Boolean. So I tried the following code and it works:

b.option(ChannelOption.SO_KEEPALIVE, Boolean.box(true));

This compiles and works. Is there any way to make it more beautiful without calling box?

Can anyone translate this compiler error?

Thank.

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Java- scala, scala Boolean , . , :

b.option[java.lang.Boolean](ChannelOption.SO_KEEPALIVE, true)
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