arrays.stream() method in Java
The stream(T[] array) method of the Arrays class in Java returns a sequential stream of the array passed as the argument. The parameter array can be of any data type, T, supported by Java. The stream is a sequence of objects represented as a channel of data that​ has a source where the data is situated, and a destination where it is transmitted.
The stream method has two overloaded types:
stream(T[] array)stream(T[] array, int start, int end)
Let’s take a look at each of them below:
1 . stream(T[] array)
This method simply takes an array and returns the sequential stream of all the elements of the array. See the syntax below:
Code
The code snippet below illustrates the usage of the stream(T[] array) method:
import java.util.*;import java.util.stream.*;class StreamDemo {public static void main( String args[] ) {String[] arr = { "I", "work", "at", "Educative", "Axis" };// storing a stream in a string objectStream<String> arr_stream = Arrays.stream(arr);// displaying each element in the stream objectarr_stream.forEach((ele) -> System.out.print(ele + " "));}}
2 . stream(T[] array, int start, int end)
This method returns a sequential stream which only consists of a few specified elements from the array. These specified elements are based on the range of the start and end indices passed to this method.
Have a look at the syntax below:
Code
The code snippet below illustrates the usage of the stream(T[] array, int start, int end) method:
import java.util.*;import java.util.stream.*;class StreamDemo {public static void main( String args[] ) {String[] arr = { "I", "work", "at", "Educative", "Axis" };// storing a stream of index 1, 2 and 3 in a string objectStream<String> arr_stream = Arrays.stream(arr, 1, 4);// displaying each element in the stream objectarr_stream.forEach((ele) -> System.out.print(ele + " "));}}
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