Java Random Byte Array nextBytes(int count)

Description

Creates an array of random bytes.

License

Apache License

Parameter

Parameter	Description
count	the size of the returned array

Exception

Parameter	Description
IllegalArgumentException	if count is negative

Return

the random byte array

Declaration

public static byte[] nextBytes(int count) 

Method Source Code

//package com.java2s;
/*//from  w  ww  . j av a 2s .  com
 * Copyright 2002-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Random;

public class Main {
    /**
     * Random object used by random method. This has to be not local to the
     * random method so as to not return the same value in the same millisecond.
     */
    private static final Random RANDOM = new Random();

    /**
     * <p>
     * Creates an array of random bytes.
     * </p>
     * 
     * @param count
     *            the size of the returned array
     * @return the random byte array
     * @throws IllegalArgumentException if {@code count} is negative
     */
    public static byte[] nextBytes(int count) {
        byte[] result = new byte[count];
        RANDOM.nextBytes(result);
        return result;
    }
}

Related

1. getRandomByteArray(int len)
2. getRandomBytes()
3. getRandomBytes(int size)
4. getRandomBytes(int size)
5. nextBytes(byte[] bytes)
6. nextBytes(int length)
7. randBytes(int length)
8. randomByte(byte[] b)
9. randomByteArray(int length)