LongStream mapToInt() in Java with Examples
LongStream mapToInt() returns an IntStream consisting of the results of applying the given function to the elements of this stream.
Note : LongStream mapToInt() is a intermediate operation. These operations are always lazy. Intermediate operations are invoked on a Stream instance and after they finish their processing, they give a Stream instance as output.
LongStream mapToInt(LongToIntFunction mapper)
- LongStream : A sequence of primitive long-valued elements. This is the long primitive specialization of Stream.
- mapper : A stateless function to apply to each element.
Return Value : The function returns an IntStream consisting of the results of applying the given function to the elements of this stream.
Example 1 :
2 4 6 8 10
Example 2 :
-2147483648 -2147483647 -2147483646 -2147483645 -2147483644
Example 3 :
0 1 2 3 4