What logging can be used to log in GWT shared code?

There are three types of code in a GWT project:

1. Client code (GWT c开发者_运维百科lient / javascript)
2. Server code (servlet container / java)
3. Shared code (GWT client & servlet container / javascript & java)

Logging framework usable for each type:

1. Client - gwt-log
2. Server - slf4j
3. Shared - ???

I'd like to have a write once for the shared code that could include logging.

Any solutions out there for this?

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GWT 2.1 includes java.util.logging emulation, you can find a sample project using it. You should be able to use this in shared code that's running on the client side and server side.