313 | ### Immutable Collection Factories
314 | ````java
315 |
/* Comment sections would break ... */
316 | List<Integer> listOfNumbers = List.of(1, 2, 3, 4, 5/*, null*/);
317 |
318 | Set<Integer> setOfNumbers = Set.of(1, 2, 3, 4, 5/*, 1*/);
319 |
320 | Map<String, String> mapOfString =
321 | Map.of("key1", "value1", "key2", "value2");
322 |
323 | Map<String, String> moreMapOfString =
324 | Map.ofEntries(
325 | Map.entry("key1", "value1"),
326 | Map.entry("key2", "value2")/*,
327 | Map.entry("key1", "value3")*/
328 | );
329 | ````
330 |
331 |