synchronize sharepoint documents with another system

Is it possible for the documents开发者_如何转开发 (inside the sharepoint document library) to be accessible from another system library (implemented in J2ee), and both should be synchronized together ?

Is this possible using "Microsoft Sync Framework for SharePoint" , then using "webservices" to connect to the java API ?

May anyone give me brief descriptions how this can be achieved?

Thanks in advance.

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You can access the documents inside a document library using the Server/Client Object Model or WebServices.

• Download a file using the Server Object Model
• Upload a file using the Client Object Model
• Get ListItemChanges WebService

Please explain what you want to achieve (architecture) so it will be easier for us to understand and give you hints in the right direction.