Java Coding Problems

Take while a predicate returns true

One of the most useful methods that was added to the Stream class, starting with JDK 9, was takeWhile​(Predicate<? super T> predicate). This method comes with two different behaviors, as follows:

• If the stream is ordered, it returns a stream consisting of the longest prefix of elements taken from this stream that match the given predicate.
• If the stream is unordered, and some (but not all) of the elements of this stream match the given predicate, then the behavior of this operation is nondeterministic; it is free to take any subset of matching elements (which includes the empty set).

In the case of an ordered Stream, the longest prefix of elements is a contiguous sequence of elements of the stream that ...