Converting list into set in java

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();
   }
 }
}

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