Random nextBytes() method in Java with Examples
The nextBytes() method of Random class places the generated random bytes into an user-supplied byte array.
Syntax:
public void nextBytes(byte[] bytes)
Parameters: The function accepts a single parameter bytes which is the non-null byte array in which to put the random bytes.
Return Value: This method has no return value.
Exception: The function does not throws any exception.
Program below demonstrates the above mentioned function:
Program 1:
// program to demonstrate the// function java.util.Random.nextBytes()  import java.util.*;public class GFG {    public static void main(String[] args)    {          // create random object        Random r = new Random();          // create byte array        byte[] bytes = new byte[10];          // put the next byte in the array        r.nextBytes(bytes);          // print random value of array        System.out.print("Random bytes = [ ");        for (int i = 0; i < bytes.length; i++) {            System.out.printf("%d ", bytes[i]);        }        System.out.print("]");    }} |
Output:
Random bytes = [ -90 -126 -75 50 -117 -13 -55 -63 -117 47 ]
Program 2:
// program to demonstrate the// function java.util.Random.nextBytes()  import java.util.*;public class GFG {    public static void main(String[] args)    {          // create random object        Random r = new Random();          // create byte array        byte[] bytes = new byte[15];          // put the next byte in the array        r.nextBytes(bytes);          // print random value of array        System.out.print("Random bytes = [ ");        for (int i = 0; i < bytes.length; i++) {            System.out.printf("%d ", bytes[i]);        }        System.out.print("]");    }} |
Output:
Random bytes = [ -82 75 -105 41 -34 94 81 10 -107 -46 37 4 -1 100 -119 ]
