Stream collect(Supplier supplier, BiConsumer accumulator, BiConsumer combiner) example
Description
Stream collect(Supplier<R> supplier,
BiConsumer<R,? super T> accumulator, BiConsumer<R,R> combiner)
performs a mutable reduction operation on the elements of this stream.
Syntax
collect has the following syntax.
<R> R collect(Supplier<R> supplier, BiConsumer<R,? super T> accumulator, BiConsumer<R,R> combiner)
Example
The following example shows how to use collect.
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Stream;
//from ww w .ja v a 2 s .c o m
public class Main {
public static void main(String[] args) {
Stream<String> s = Stream.of("a","b","c");
List<String> names = s
.collect(ArrayList::new, ArrayList::add, ArrayList::addAll);
System.out.println(names);
}
}
The code above generates the following result.
