### Question:
EnumerationUtils { public static <T> T get(final Enumeration<T> e, final int index) { int i = index; CollectionUtils.checkIndexBounds(i); while (e.hasMoreElements()) { i--; if (i == -1) { return e.nextElement(); } else { e.nextElement(); } } throw new IndexOutOfBoundsException("Entry does not exist: " + i); } private  EnumerationUtils(); static T get(final Enumeration<T> e, final int index); static List<E> toList(final Enumeration<? extends E> enumeration); static List<String> toList(final StringTokenizer stringTokenizer);  }### Answer:
@Test public void getFromEnumeration() throws Exception { final Vector<String> vector = new Vector<String>(); vector.addElement("zero"); vector.addElement("one"); Enumeration<String> en = vector.elements(); assertEquals("zero", EnumerationUtils.get(en, 0)); en = vector.elements(); assertEquals("one", EnumerationUtils.get(en, 1)); try { EnumerationUtils.get(en, 3); fail("Expecting IndexOutOfBoundsException."); } catch (final IndexOutOfBoundsException e) { } assertTrue(!en.hasMoreElements()); }