Java Byte Array Dump dump(byte[] array)

Description

dump

License

Open Source License

Declaration

public static void dump(byte[] array) 

Method Source Code

//package com.java2s;
/*/*from  w w  w.j a  va  2s . co m*/
 * Copyright (c) 2006 Leonardo "Bubble" Mesquita
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy 
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights 
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
 * copies of the Software, and to permit persons to whom the Software is 
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

public class Main {
    public static void dump(byte[] array) {
        dump(array, 0, array.length);
    }

    public static void dump(byte[] array, int index, int length) {
        if (array == null) {
            System.out.println("(null byte array)");
            return;
        }
        String line = "";
        String side = "";
        int column = 0;

        for (int i = index, count = length; count > 0; i++, count--) {
            byte b = array[i];
            if (b >= 0 && b < 32) {
                line += ".";
            } else {
                line += (char) (b);
            }
            side += toHex(b) + " ";
            column++;
            if (column >= 16) {
                System.out.println(line + " | " + side);
                line = "";
                side = "";
                column = 0;
            }
        }
        if (column > 0) {
            for (; column < 16; column++) {
                line += " ";
                side += "   ";
            }
            System.out.println(line + " | " + side);
        }
    }

    public static String toHex(byte value) {
        int d1 = (value >> 4) & 0xF;
        int d2 = value & 0xF;
        return Character.forDigit(d1, 16) + "" + Character.forDigit(d2, 16);
    }
}

Related

1. dump(byte b[])
2. dump(byte[] array)
3. dump(byte[] buff, int size, boolean asBits)
4. dump(byte[] buffer)
5. dump(byte[] bytes)
6. dump(byte[] bytes, int offset, int byteslen)