Java Byte Array to Hex String bytesToHexString(byte[] bytes)

Description

bytes To Hex String

License

Open Source License

Declaration

public static String bytesToHexString(byte[] bytes) 

Method Source Code

//package com.java2s;
/*/*from  www.  ja  v a2  s  .com*/
 *  Copyright (C) 2010-2015 JPEXS, All rights reserved.
 *
 * 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.
 */

public class Main {
    private final static String ZEROS8 = "00000000";

    public static String bytesToHexString(byte[] bytes) {
        return bytesToHexString(bytes, 0);
    }

    public static String bytesToHexString(byte[] bytes, int start) {
        StringBuilder sb = new StringBuilder();
        if (start < bytes.length) {
            for (int ii = start; ii < bytes.length; ii++) {
                sb.append(formatHex(bytes[ii] & 0xff, 2));
                sb.append(' ');
            }
            sb.setLength(sb.length() - 1);
        }
        return sb.toString();
    }

    public static String bytesToHexString(int maxByteCountInString,
            byte[] bytes, int start) {
        if (bytes.length - start <= maxByteCountInString) {
            return bytesToHexString(bytes, start);
        }
        byte[] trailingBytes = new byte[maxByteCountInString / 2];
        byte[] headingBytes = new byte[maxByteCountInString
                - trailingBytes.length];
        System.arraycopy(bytes, start, headingBytes, 0, headingBytes.length);
        int startOfTrailingBytes = bytes.length - trailingBytes.length;
        System.arraycopy(bytes, startOfTrailingBytes, trailingBytes, 0,
                trailingBytes.length);
        StringBuilder sb = new StringBuilder();
        sb.append(bytesToHexString(headingBytes, 0));
        if (trailingBytes.length > 0) {
            sb.append(" ... ");
            sb.append(bytesToHexString(trailingBytes, 0));
        }
        return sb.toString();
    }

    public static String formatHex(int value, int width) {
        StringBuilder sb = new StringBuilder();
        sb.append(Integer.toHexString(value));
        if (width > sb.length()) {
            sb.insert(0, ZEROS8, 0, width - sb.length());
        }
        return sb.toString();
    }
}

Related

1. bytesToHexString(byte[] bytes)
2. bytesToHexString(byte[] bytes)
3. bytesToHexString(byte[] bytes)
4. bytesToHexString(byte[] bytes)
5. bytesToHexString(byte[] bytes)
6. bytesToHexString(byte[] bytes)
7. bytesToHexString(byte[] bytes)
8. bytesToHexString(byte[] bytes)
9. bytesToHexString(byte[] data)