Java Byte Array Create toBytes(int i)

Description

Converts the given integer into an array of bytes in network byte order.

License

Open Source License

Parameter

Parameter	Description
i	The integer to convert.

Return

An array of bytes equivalent to the given integer.

Declaration

public static byte[] toBytes(int i) 

Method Source Code

//package com.java2s;
/*//from ww  w . j  a v  a 2 s  .  c o m
 * Copyright (C) 2014 Russell Smith.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */

public class Main {
    /**
     * Converts the given integer into an array of bytes in network byte order.
     * 
     * @param i The integer to convert.
     * @return An array of bytes equivalent to the given integer.
     */
    public static byte[] toBytes(int i) {
        return toBytes(i, 0, new byte[4]);
    }

    /**
     * Converts the given integer into an array of bytes in network byte order and
     * places it into the given array.
     * 
     * @param i The integer to convert.
     * @param offset The offset for where to put the bytes in the returned array.
     * @param out The array to place the bytes into.
     * @return A reference to the given byte array.
     */
    public static byte[] toBytes(int i, int offset, byte[] out) {

        out[offset + 3] = (byte) (i >> 24);
        out[offset + 2] = (byte) (i >> 16);
        out[offset + 1] = (byte) (i >> 8);
        out[offset] = (byte) (i);

        return out;
    }

    /**
     * Converts the given long into an array of bytes in network byte order.
     * 
     * @param l The long to convert.
     * @return An array of bytes equivalent to the given integer.
     */
    public static byte[] toBytes(long l) {
        return toBytes(l, 0, new byte[8]);
    }

    /**
     * Converts the given long into an array of bytes in network byte order and
     * places it into the given array.
     * 
     * @param l The long to convert.
     * @param offset The offset for where to put the bytes in the returned array.
     * @param out The array to place the bytes into.
     * @return A reference to the given byte array.
     */
    public static byte[] toBytes(long l, int offset, byte[] out) {

        out[offset + 7] = (byte) (l >> 56);
        out[offset + 6] = (byte) (l >> 48);
        out[offset + 5] = (byte) (l >> 40);
        out[offset + 4] = (byte) (l >> 32);
        out[offset + 3] = (byte) (l >> 24);
        out[offset + 2] = (byte) (l >> 16);
        out[offset + 1] = (byte) (l >> 8);
        out[offset] = (byte) (l);

        return out;
    }

    /**
     * Converts the given short into an array of bytes in network byte order.
     * 
     * @param s The short to convert.
     * @return An array of bytes equivalent to the given integer.
     */
    public static byte[] toBytes(short s) {
        return toBytes(s, 0, new byte[2]);
    }

    /**
     * Converts the given short into an array of bytes in network byte order and
     * places them into the given array.
     * 
     * @param s The short to convert.
     * @param offset The offset into the given array to place the bytes.
     * @param out The array to place the bytes.
     * @return A reference to the given byte array.
     */
    public static byte[] toBytes(short s, int offset, byte[] out) {

        out[offset + 1] = (byte) (s >> 8);
        out[offset] = (byte) (s);

        return out;
    }
}

Related

1. toBytes(final String str)
2. toBytes(final String text)
3. toBytes(int data)
4. toBytes(int data)
5. toBytes(int i)
6. toBytes(int i)
7. toBytes(int i)
8. toBytes(int i)
9. toBytes(int i)