Java Byte Array Create toBytes(long value, int numBytes)

Description

to Bytes

License

Apache License

Parameter

Parameter	Description
value	byte, short, int, long to translate big-endian to an array
numBytes	1 = byte, 2 short, 4 = int, 8 = long. or try 5 for the heck of it.

Declaration

public static byte[] toBytes(long value, int numBytes) 

Method Source Code

//package com.java2s;
/*// w  ww . java 2 s . co m
 * Copyright (C) 2012 Facebook, Inc.
 *
 * 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.
 */

public class Main {
    /**
     * @param value    byte, short, int, long to translate big-endian to an array
     * @param numBytes 1 = byte, 2 short, 4 = int, 8 = long.  or try 5 for the heck of it.
     * @return
     */
    public static byte[] toBytes(long value, int numBytes) {
        byte[] bytes = new byte[numBytes];

        for (int i = numBytes - 1; i > 0; i--) {
            bytes[i] = (byte) value;
            value >>>= 8;
        }

        bytes[0] = (byte) value;

        return bytes;
    }
}

Related

1. toBytes(long v, byte[] writeBuffer, int o)
2. toBytes(long val)
3. toBytes(long value)
4. toBytes(long value)
5. toBytes(long value)
6. toBytes(long... values)
7. toBytes(Object objValue)
8. toBytes(Object value)
9. toBytes(short s)