Creating a small Collection in Java is very verbose using the traditional way.
Set<String> set = new HashSet<>();
set.add("foo");
set.add("bar");
set.add("baz");
Java 9 “of” method comes to rescue us
Set<String> set = Set.of("foo", "bar", "baz");
You can use in other collections as well
List<String> list = List.of("foo", "bar", "baz");
Map<String, String> map = Map.of("foo", "a", "bar", "b", "c");int[] arr = { 1, 2, 3, 4, 5 };
List<int[]> list = List.of(arr);