IntStream mapToObj() returns an object-valued Stream consisting of the results of applying the given function.
Note : IntStream mapToObj() 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.
Syntax :
<U> Stream<U> mapToObj(IntFunction<? extends U> mapper)
Parameters :
- U : The element type of the new stream.
- Stream : A sequence of elements supporting sequential and parallel aggregate operations.
- IntFunction : Represents a function that accepts an int-valued argument and produces a result.
- mapper : A stateless function to apply to each element.
Return Value : The function returns an object-valued Stream consisting of the results of applying the given function.
Example 1 :
// Java code for IntStream mapToObj// (IntFunction mapper)import java.util.*;import java.util.stream.Stream;import java.util.stream.IntStream; class GFG { // Driver code public static void main(String[] args) { // Creating an IntStream IntStream stream = IntStream.range(3, 8); // Creating a Stream of Strings // Using IntStream mapToObj(IntFunction mapper) // to store binary representation of // elements in IntStream Stream<String> stream1 = stream.mapToObj(num -> Integer.toBinaryString(num)); // Displaying an object-valued Stream // consisting of the results of // applying the given function. stream1.forEach(System.out::println); }} |
Output :
11 100 101 110 111
Example 2 :
// Java code for IntStream mapToObj// (IntFunction mapper)import java.util.*; import java.math.BigInteger;import java.util.stream.Stream;import java.util.stream.IntStream; class GFG { // Driver code public static void main(String[] args) { // Creating an IntStream IntStream stream = IntStream.of(3, 5, 7, 9, 11); // Creating a Stream // Using IntStream mapToObj(IntFunction mapper) Stream<BigInteger> stream1 = stream .mapToObj(BigInteger::valueOf); // Displaying an object-valued Stream // consisting of the results of // applying the given function. stream1.forEach(num -> System.out.println(num.add(BigInteger.TEN))); }} |
Output :
13 15 17 19 21