Is there another element to read in the collection?
Returns true if the next value is known to be null otherwise false if the value is not null or is unknown.
Returns true if the next value is known to be null otherwise false if the value is not null or is unknown. This means that even if the next value ends up being null this can return false.
Note: If the next value is null then this method should consume that input
(Since version ) see corresponding Javadoc for more information.
For reading Collections