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I can not find RosterExchangeProvider in smack4.0.7

Question asked by QuinnChen on Mar 20, 2015

I down load the library here:

and read the  API doc here: http://

and read the help document here :http://


when i use the smack4.0.7 library, i can not find the class RosterExchangeProvider, which can be found in the API doc@