Java mismatch between String and String[] -


i'm using java implement apriori algorithm 1 problem exists.

arraylist<string> l1=new arraylist<>();//l1 ... arraylist<string[]> lk1=l1;//lk-1

then warns that: cannot convert arraylist<string> arraylist<string[]>. how can solve problem?

they're different types. ignore collection , @ underlying type.

   string str = "this string.";    string[] array = str;

these 2 different types, unconvertable, t collection, collections unconvertable. basic concept here.


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