You need to include the google guava jar.

https://code.google.com/p/guava-libraries/

Peter


On Wed, Feb 12, 2014 at 7:21 AM, Ryan Asleson <[email protected]> wrote:

>
> Hello,
>
> I'm applying Guice 4.0 beta 2 to a new project (I have some experience
> with Guice 3.0) and I have a need for a custom scope, with which I have no
> experience.  I followed the instructions on the "Custom Scopes" wiki page,
> however, there are errors in the code.  These two lines in the SimpleScope
> class cause errors:
>
> import static com.google.common.base.Preconditions.checkState;
> import com.google.common.collect.Maps;
>
>
> Looking within the guice-4.0-beta2.jar file, I see that the
> com.google.common.base and com.google.common.collect packages are empty.
>
> I did find these two other classes within the jar and changed the import
> statements to look like this:
>
> import com.google.inject.internal.guava.base.$Preconditions;
> import com.google.inject.internal.guava.collect.$Maps;
>
> Is this correct?  Are these the imports I should be using or should I use
> something else?  I tried looking at the source to the ServletScopes class
> but it had the same imports that I referenced first.
>
> Thank you!!
>
> -Ryan
>
>
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