Java Hex Calculate toHexString(byte[] bytes)

Description

converts all bytes into a hex string of length bytes.length * 2

License

Open Source License

Parameter

Parameter	Description
bytes	input bytes

Return

a hex representation of bytes

Declaration

public static String toHexString(byte[] bytes) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    private static final char[] HEXCHARS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
            'E', 'F' };

    /**/* w w w  .j  a  v a  2s  .co m*/
     * converts all bytes into a hex string of length bytes.length * 2
     * @param bytes input bytes
     * @return a hex representation of bytes
     */
    public static String toHexString(byte[] bytes) {
        return toHexString(bytes, 0, bytes.length, 0);
    }

    /**
     * converts all bytes into a hex string of length bytes.length * 2
     * @param bytes input bytes
     * @return a hex representation of bytes
     */
    public static String toHexString(byte[] bytes, int off, int len) {
        return toHexString(bytes, off, len, 0);
    }

    /**
     * converts all bytes into a hex string of length bytes.length * 2
     * @param bytes input bytes
     * @param space when to set spaces (byte 1) and when to add newlines (byte 2)
     * @return a hex representation of bytes
     */
    public static String toHexString(byte[] bytes, int space) {
        return toHexString(bytes, 0, bytes.length, space);
    }

    /**
     * converts all bytes into a hex string of length bytes.length * 2
     * @param bytes input bytes
     * @param space when to set spaces (byte 1) and when to add newlines (byte 2)
     * @return a hex representation of bytes
     */
    public static String toHexString(byte[] bytes, int off, int len, int space) {
        if (bytes.length == 0)
            return "";
        String LS = System.lineSeparator();
        int s = space & 0xFF, nl = space >> 8 & 0xFF;
        int pos = 0, clen = bytes.length * 2;
        if (s > 0)
            clen += (bytes.length - 1) / s;
        if (nl > 0)
            clen += (bytes.length - 1) / nl * LS.length();
        char[] chars = new char[clen];
        for (int i = 0; i < len; i++) {
            chars[pos++] = HEXCHARS[bytes[off + i] >> 4 & 0xF];
            chars[pos++] = HEXCHARS[bytes[off + i] & 0xF];
            if (i + 1 < len) {
                if (s > 0 && i % s == s - 1) {
                    if (nl > 0 && i % nl == nl - 1) {
                        LS.getChars(0, LS.length(), chars, pos);
                        pos += LS.length();
                    } else
                        chars[pos++] = ' ';
                } else if (nl > 0 && i % nl == nl - 1) {
                    LS.getChars(0, LS.length(), chars, pos);
                    pos += LS.length();
                }
            }
        }
        return new String(chars, 0, pos);
    }
}

Related

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