A DESCRIPTION OF THE REQUEST :

Please add a method similar to the following to the java.util.stream.Stream.Builder<T> class:

        default Builder<T> addAll(Iterable<? extends T> iterable) {
            for (T t : iterable) {
                accept(t);
            }
            return this;
        }



JUSTIFICATION :
I can currently create a Stream via the builder interface, such as:

Stream<String> foo = Stream.builder().add("A").add("B").add("C").build();

However, if I wish to add one or more existing collections to the stream, I have no easy way to do it, particularly using chained function calls. I would like to be able to do this:

List<String> list = new HashSet<>(Arrays.asList("B", "C", "D");
Stream<String> foo = Stream.builder().add("A").addAll(list).add("E").build();

Note that Google Guava has similar features for its builders which are used when building immutable collections.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
A Stream.Builder.addAll method as I described above.
ACTUAL -
No such method exists.

CUSTOMER SUBMITTED WORKAROUND :
Don't use chained calls to build streams which need to contain contents of collections. Break the statement into multiple statements, like so.

List<String> list = new HashSet<>(Arrays.asList("B", "C", "D");
Stream.Builder<String> builder = Stream.builder().add("A");
list.forEach(builder::add);
Stream<String> foo = builder.add("E").build();