precise - Failed to download repository information 12.10

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http://askubuntu.com – I am getting error message when I try to update my Ubuntu 12.10 repository and I have shared my error message here for your reference. W:Failed to fetch http://ppa.launchpad.net/ferramroberto/java/ubuntu/dists/precise/main/so... 404 Not Found , W:Failed to fetch http://ppa.launchpad.net/ferramroberto/java/ubuntu/dists/precise/main/bi... 404 Not Found , E:Some index files failed to download. They have been ignored, or old ones used instead. Thanks and Regards Vijay (HowTos)