Having real trouble figuring out where i\'m going wrong on this one. Building a system using WEKA in java to study associations and am trying to implement the Apriori algori
Your class is also named Apriori, so you are experiencing a name clash.
You should change the name of your own class to a different name (e.g. AprioriTest). In the unprobable case where you would really need your class to be named Apriori, then you would have to refer to the library's implementation by it's full name:
weka.associations.Apriori apriori = new weka.associations.Apriori();
apriori.buildAssociations(dapriori);