Java Integer to Byte Array intToByteArray(int value, int numBytes)

Description

int To Byte Array

License

Open Source License

Declaration

public static byte[] intToByteArray(int value, int numBytes) 

Method Source Code

//package com.java2s;
/*//from w w  w  .  ja  v a2 s . c o m
 *  Copyright (c) 2016 Jose-Juan Pedreno-Manresa, Jose-Luis Izquierdo-Zaragoza, Pablo Pavon-Marino
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the GNU Lesser Public License v3
 *  which accompanies this distribution, and is available at
 *  http://www.gnu.org/licenses/lgpl.html
 *
 *  Contributors:
 *          Jose-Juan Pedreno-Manresa
 *          Jose-Luis Izquierdo-Zaragoza
 */

public class Main {
    public static byte[] intToByteArray(int value, int numBytes) {
        if (numBytes < 1 || numBytes > 4)
            throw new RuntimeException("Bad");

        byte[] actualByteArray = new byte[] { (byte) (value >>> 24), (byte) (value >>> 16), (byte) (value >>> 8),
                (byte) value };
        byte[] out = new byte[numBytes];
        System.arraycopy(actualByteArray, 4 - numBytes, out, 0, numBytes);

        return out;
    }
}

Related

1. intToByteArray(int value)
2. intToByteArray(int value, byte[] buffer, int offset)
3. intToByteArray(int value, byte[] data, int offset)
4. intToByteArray(int value, byte[] dest)
5. intToByteArray(int value, int nrOfBytes)
6. intToByteArray2(final int integer)
7. intToByteArray4(int i)
8. intToByteArray4(int value)
9. intToByteArrayBE(int data)