Java Long to Hex longToHex(long a)

Description

long To Hex

License

Open Source License

Declaration

public static final String longToHex(long a) 

Method Source Code

//package com.java2s;
/**//w  w w  .jav a2s . c  o  m
  *         Commmon Internet File System Java API (JCIFS)
  *----------------------------------------------------------------
  *  Copyright (C) 1999  Norbert Hranitzky
  *
  *  This program is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU General Public License as
  *  published by the Free Software Foundation; either version 2 of
  *  the License, or (at your option) any later version.
  *
  *  This program 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
  *  General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
  *  The full copyright text: http://www.gnu.org/copyleft/gpl.html
  *
  *----------------------------------------------------------------
  *  Author: Norbert Hranitzky
  *  Email : norbert.hranitzky@mchp.siemens.de
  *  Web   : http://www.hranitzky.purespace.de
  */

public class Main {
    public static final String longToHex(long a) {
        byte[] b = new byte[8];
        longToBytes(a, b, 0);
        return bytesToHex(b);
    }

    public static final void longToBytes(long a, byte[] b, int bo) {
        b[bo] = (byte) (a >> 56);
        b[bo + 1] = (byte) (a >> 48);
        b[bo + 2] = (byte) (a >> 40);
        b[bo + 3] = (byte) (a >> 32);
        b[bo + 4] = (byte) (a >> 24);
        b[bo + 5] = (byte) (a >> 16);
        b[bo + 6] = (byte) (a >> 8);
        b[bo + 7] = (byte) (a);
    }

    public static final String bytesToHex(byte[] a) {

        return bytesToHex(a, a.length);
    }

    public static final String bytesToHex(byte[] a, int len) {
        StringBuffer s = new StringBuffer();

        for (int i = 0; i < len; ++i) {
            s.append(Character.forDigit((a[i] >> 4) & 0xf, 16));
            s.append(Character.forDigit(a[i] & 0xf, 16));
        }
        return s.toString();
    }
}

Related

1. Long2HexString(long h)
2. long2hexString(long x)
3. long2HexString(StringBuilder buf, long value)
4. longToHex(long l)
5. longToHex(long l, int length)
6. longToHex(long num)
7. longToHex(long val, char delim)