Section 17.4.2 Sorting a Stream and Collecting the Results
• Stream
method sorted
(p. 745) sorts a stream’s elements into ascending order by default.
• To create a collection containing a stream pipeline’s results, you can use Stream
method collect
(a terminal operation). As the stream pipeline is processed, method collect
performs a mutable reduction operation that places the results into an object, such as a List
, Map
or Set
.
• Method collect
with one argument receives an object that implements interface Collector
(package java.util.stream
), which specifies how to perform the mutable reduction.
• Class Collectors
(package java.util.stream
) provides static
methods that return predefined Collector
implementations.
• Collectors
method toList ...
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