AugustoLevel 13, CallaoRating:190Active Write a message 0 Comments (2)PopularNewOld You must be signed in to leave a comment Anonymous #10428383 Level 12 , Seattle, United States29 December 2019, 08:08Also, import java.util.HashSet; Import java.Set; import java.Iterator; How things happens "HashSet->Set->Collection->Iterator" 0 Anonymous #10428383 Level 12 , Seattle, United States29 December 2019, 08:03HashSet<String> .... instead Set<String>... 0