import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class Main {
public static void main(String[] args) {
List<String> myList = new ArrayList<String>();
myList.add("Hello");
myList.add("World");
myList.add("World");
Set<String> set = new HashSet<String>(myList);
System.out.println(set);
}
}
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