Open source Java proxy server?!

Hi,
I want to use a java proxy server in my application.Can someone suggest me some popular java proxy server with free source code? Also, the proxy should log URL details that the user navigates to.
Any help is greatly appreciated.
Thanks
Aparna

Hi michael,
In fact i have downloaded the proxy but running into problems while using it.I am using it on windows platform and when i give some URL in the browser, the request is taken by our RabbIT but after that the browser is asking me for the authentication for a number of times and then show me some error.Why is RabbIT asking me for authentication though i am specifying it in the configuration file?
Any help is appreciated.
Aparna

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