// get a element, if collection has only one element
private static void testGetSingle() {
Collection<String> collection = Lists.newArrayList("a3");
OrderedIterable<String> orderedIterable = FastList.newListWith("a3");
Iterable<String> iterable = collection;
// get a element, if collection has only one element
String guava = Iterables.getOnlyElement(iterable); // using guava
String jdk = collection.iterator().next(); // using JDK
String apache = CollectionUtils.extractSingleton(collection); // using Apache
assert (orderedIterable.size() != 1); // using GS
String gs = orderedIterable.getFirst();
System.out.println(
"single = " + jdk + ":" + guava + ":" + apache + ":" + gs); // print single = a3:a3:a3:a3
}
