Java Integer to int2buff(int n)

Description

int convert to buff (big-endian)

License

LGPL

Parameter

Parameter	Description
n	number

Return

4 bytes buff

Declaration

public static byte[] int2buff(int n) 

Method Source Code

//package com.java2s;
/**//  w  ww  . j  a v  a  2 s.  c om
* Copyright (C) 2008 Happy Fish / YuQing
*
* FastDHT Java Client may be copied only under the terms of the GNU Lesser
* General Public License (LGPL).
* Please visit the FastDHT Home Page http://fastdht.csource.org/ for more detail.
**/

public class Main {
    /**
    * int convert to buff (big-endian)
    * @param n number
    * @return 4 bytes buff
    */
    public static byte[] int2buff(int n) {
        byte[] bs;

        bs = new byte[4];
        bs[0] = (byte) ((n >> 24) & 0xFF);
        bs[1] = (byte) ((n >> 16) & 0xFF);
        bs[2] = (byte) ((n >> 8) & 0xFF);
        bs[3] = (byte) (n & 0xFF);

        return bs;
    }

    /**
    * int convert to buff (big-endian)
    * @param n number
    * @param bs byte buff
    * @param offset buff start index
    */
    public static void int2buff(int n, byte[] bs, int offset) {
        bs[offset] = (byte) ((n >> 24) & 0xFF);
        bs[offset + 1] = (byte) ((n >> 16) & 0xFF);
        bs[offset + 2] = (byte) ((n >> 8) & 0xFF);
        bs[offset + 3] = (byte) (n & 0xFF);

        return;
    }
}

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