Java - Arrays stream() method in Java

Arrays stream() method in Java

stream(T[] array)

to get a Sequential Stream from the array passed as the parameter with its elements.

It returns a sequential Stream with the elements of the array, passed as parameter, as its source.

Syntax:public static <T> Stream<T> stream(T[] array)

• Parameters: This method accepts a mandatory parameter array which is the array of whose elements are to be converted into a sequential stream.
• Return Value: This method returns a Sequential Stream from the array passed as the parameter.

Program 1: Arrays.stream() to convert string array to stream.

import java.util.*;
import java.util.stream.*;

class GFG {
    public static void main(String[] args) {
        // Creating a String array
        String[] arr = { "Geeks", "for", "Geeks" };

        // Using Arrays.stream() to convert array into Stream
        Stream<String> stream = Arrays.stream(arr);

        // Displaying elements in Stream
        stream.forEach(str -> System.out.print(str + " "));
    }
}
// Output:
// Geeks for Geeks

Program 2: Arrays.stream() to convert int array to stream.

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brightness_4 // Java program to demonstrate Arrays.stream() method

import java.util.; import java.util.stream.;

class GFG {

public static void main(String[] args)
{
    // Creating an integer array
    int arr[] = { 1, 2, 3, 4, 5 };

    // Using Arrays.stream() to convert
    // array into Stream
    IntStream stream = Arrays.stream(arr);

    // Displaying elements in Stream
    stream.forEach(str -> System.out.print(str + " "));
} } Output: 1 2 3 4 5 stream(T[] array, int startInclusive, int endExclusive) The stream(T[] array, int startInclusive, int endExclusive) method of Arrays class in Java, is used to get a Sequential Stream from the array passed as the parameter with only some of its specific elements. These specific elements are taken from a range of index passed as the parameter to this method. It Returns a sequential Stream with the specified range of the specified array as its source.

Syntax:

public static Stream stream(T[] array, int startInclusive, int endExclusive) Parameters: This method accepts three mandatory parameters:

array which is the array of whose elements are to be converted into a sequential stream. startInclusive which is the first index to cover, inclusive endExclusive which is the index immediately past the last index to cover Return Value: This method returns a Sequential Stream formed from the range of elements of array passed as the parameter.

Below are the example to illustrate Arrays.stream() method:

Program 1: Arrays.stream() to convert string array to stream.

filter_none edit play_arrow

brightness_4 // Java program to demonstrate Arrays.stream() method

import java.util.; import java.util.stream.;

class GFG { public static void main(String[] args) {

    // Creating a String array
    String[] arr = { "Geeks", "for", "Geeks",
                     "A", "Computer", "Portal" };

    // Using Arrays.stream() to convert
    // array into Stream
    Stream<String> stream = Arrays.stream(arr, 3, 6);

    // Displaying elements in Stream
    stream.forEach(str -> System.out.print(str + " "));
} } Output: A Computer Portal Program 2: Arrays.stream() to convert int array to stream.

filter_none edit play_arrow

brightness_4 // Java program to demonstrate Arrays.stream() method

import java.util.; import java.util.stream.;

class GFG {

public static void main(String[] args)
{
    // Creating an integer array
    int arr[] = { 1, 2, 3, 4, 5 };

    // Using Arrays.stream() to convert
    // array into Stream
    IntStream stream = Arrays.stream(arr, 1, 3);

    // Displaying elements in Stream
    stream.forEach(str -> System.out.print(str + " "));
} } Output: 2 3 Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.