We would like to know how to convert a List to a Set.
import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; //from ww w . ja va 2 s. c o m public class Main { public static void main(String[] args) { List<String> myList = new ArrayList<String>(); myList.add("A"); myList.add("B"); myList.add("C"); myList.add("D"); Set<String> mySet = new HashSet<String>(myList); for (Object theFruit : mySet) System.out.println(theFruit); } }
The code above generates the following result.