Something

  boolean deleteDuplicates()  {    Type[] arrayType = new Type(types.size()];    arrayType = types.toArray(arrayTypes);    // copy list into set for automatic deletion     //   of duplicate entries    Set set = new HashSet(arrayType);      // copy set back into the original list as a list from a set    original = new LinkedList<Type>(Set.asList(set));    System.out.println("\n  Duplicates if found have been deleted. 'P' to print.\n");    return true;  }