public static <T> String join(Iterator<T> iterator, CharSequence conjunction) {
		return StrJoiner.of(conjunction).append(iterator).toString();
	}
@Test
	public void joinTest() {
		final ArrayList<String> list = CollUtil.newArrayList("1", "2", "3", "4");
		final String join = IterUtil.join(list.iterator(), ":");
		assertEquals("1:2:3:4", join);

		final ArrayList<Integer> list1 = CollUtil.newArrayList(1, 2, 3, 4);
		final String join1 = IterUtil.join(list1.iterator(), ":");
		assertEquals("1:2:3:4", join1);

		// 包装每个节点
		final ArrayList<String> list2 = CollUtil.newArrayList("1", "2", "3", "4");
		final String join2 = IterUtil.join(list2.iterator(), ":", "\"", "\"");
		assertEquals("\"1\":\"2\":\"3\":\"4\"", join2);
	}