Tag Archives: java-stream

Stream allMatch(Predicate predicate) returns whether all elements of this stream match the provided predicate. It may not evaluate the predicate on all elements if not… Read More »

Stream anyMatch(Predicate predicate) returns whether any elements of this stream match the provided predicate. It may not evaluate the predicate on all elements if not… Read More »

Stream noneMatch(Predicate predicate) returns whether no elements of this stream match the provided predicate. It may not evaluate the predicate on all elements if not… Read More »

In Java 8, there is predefined counting() method returned by Collectors class counting() method to count the number of elements in a Stream. Syntax :… Read More »

Stream filter(Predicate predicate) returns a stream consisting of the elements of this stream that match the given predicate. This is an intermediate operation. These operations… Read More »

Stream findFirst() returns an Optional (a container object which may or may not contain a non-null value) describing the first element of this stream, or… Read More »

Stream flatMapToInt(Function mapper) returns an IntStream consisting of the results of replacing each element of this stream with the contents of a mapped stream produced… Read More »

Stream mapToInt(ToIntFunction mapper) returns an IntStream consisting of the results of applying the given function to the elements of this stream. Stream mapToInt(ToIntFunction mapper) is… Read More »

Stream map(Function mapper) returns a stream consisting of the results of applying the given function to the elements of this stream. Stream map(Function mapper) is… Read More »

Stream peek(Consumer action) returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as elements are consumed… Read More »

Stream flatMapToLong(Function mapper) applies given mapper function to each element of a stream and returns a LongStream. Stream flatMapToLong(Function mapper) is an intermediate operation. Intermediate… Read More »

Stream mapToDouble (ToDoubleFunction mapper) returns a DoubleStream consisting of the results of applying the given function to the elements of this stream. Stream mapToDouble (ToDoubleFunction… Read More »

Stream of(T t) returns a sequential Stream containing a single element i.e, a singleton sequential stream. A sequential stream work just like for-loop using a… Read More »