java.util.Random.nextBytes() Method

Description

The nextBytes(byte[] bytes) method is used to generate random bytes and places them into a user-supplied byte array.

Declaration

Following is the declaration for java.util.Random.nextBytes() method.

public void nextBytes(byte[] bytes)

Parameters

• bytes--This is the non-null byte array in which to put the random bytes.

Return Value

NA

Exception

• NA

Example

The following example shows the usage of java.util.Random.nextBytes()

package com.tutorialspoint;

import java.util.*;

public class RandomDemo {
   public static void main( String args[] ){
      // create random object
      Random randomno = new Random();
      
      // create byte array
      byte[] nbyte = new byte[30];
      
      // put the next byte in the array
      randomno.nextBytes(nbyte);
   
      // check the value of array   
      System.out.println("Value of byte array: " + nbyte);
   }      
}

Let us compile and run the above program, this will produce the following result.

Value of byte array: [B@addbf1