import java.util.*;

public class RemoveDups {
    public static void main(String[] args) {

	Collection fatlist = new LinkedList();
	for (int i=0; i<10; i++)
	    fatlist.add("A");
	Collection leanlist = new HashSet(fatlist);
	System.out.println("Repeats: "+fatlist);
	System.out.println("No dups: "+leanlist);

    }
}

/* Output:
   Repeats: [A, A, A, A, A, A, A, A, A, A]
   No dups: [A]
*/