As an special case of List.of(…) or Collections.unmodifiableList() – what is the preferred Java 9 way of pointing to an empty and immutable list?
or switch to
What is the preferred Java 9 way of pointing to an empty and immutable list?
The difference is rather subtle so “preferred” depends on what you want to achieve. Some behavioral differences:
List.ofwill throw an exception on
- You can deserialize
emptyList()on JDK 8 and previous, but not
In terms or conveying that you want an empty list,
emptyList() might look better, but this is just a temporary convention. If developers start using
List.of() (which is much shorter than
Collections.emptyList()) then it will become a known and accepted way, it’s just new. If you think about it, there are some constructs we use which do not always convey what they do by themselves, but we got accustomed to them.
So there is no strictly preferred way. If the behavior does not matter use whatever you want.