While you can use either ``++forEach(list::add)++`` or ``++collect++`` with a ``++Stream++``, ``++collect++`` is by far the better choice because it's automatically thread-safe and parallellizable.
== Noncompliant Code Example
----
List<String> bookNames = new ArrayList<>();
books.stream().filter(book -> book.getIsbn().startsWith("0"))
.map(Book::getTitle)
.forEach(bookNames::add); // Noncompliant
== Compliant Solution
List<String> bookNames = books.stream().filter(book -> book.getIsbn().startsWith("0"))
.collect(Collectors.toList());