The main element of this example is Spliterator. This interface defines methods that can be used to process and partition a source of elements to be used, for example, the source of a Stream object. You will rarely need to use a Spliterator object directly. Only if you want a different behavior--that is, if you want to implement your own data structure and create Stream from it--use a Spliterator object.
Spliterator has a set of characteristics that defines its behavior. They are as follows:
- CONCURRENT: The data source can be safely modified concurrently
- DISTINCT: All the elements of the data source are distinct
- IMMUTABLE: Elements can be added, deleted, or replaced in the data source
- NONNULL: There's no null element in the ...
