import java.util.List; import java.util.Set; import java.util.ArrayList; import java.util.HashSet; public class list2Set{ public static void main(String args[]) { try{ // Creating one sample list List sampleList=new ArrayList(); // Adding some element into list sampleList.add("One"); sampleList.add("Two"); sampleList.add("Three"); sampleList.add("One"); // Converting list in set. During this conversion all the duplicate elements are removed. Set mySet=new HashSet(sampleList); System.out.println(mySet); } catch(Exception e){ e.printStackTrace(); } ...