import java.util.*;
public class Test{
  public static void main(String args[]){
     List myList = new ArrayList();
     Set mySet = new HashSet();
     for (int i=0; i<args.length; i++){
	myList.add(args[i]);
	mySet.add(args[i]);
     }
     System.out.println(myList.toString());
     System.out.println(mySet.toString());
   }
}

import java.util.*;
public class Test{
  public static void main(String args[]){
     List myList = Arrays.toList(args);
     Set mySet = new HashSet(myList);
     // I think the toString() call might be redundant
     // println internally invokes the object's toString()
     System.out.println(myList);
     System.out.println(mySet);
   }
}