Java Hex Calculate toHex(final byte[] ba)

Description

to Hex

License

Open Source License

Declaration

public static String toHex(final byte[] ba) 

Method Source Code

//package com.java2s;

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

    public static String toHex(final byte[] ba) {
        return toHex(ba, false);
    }/* w  w  w  . j av  a2 s.  c o  m*/

    public static String toHex(final byte[] ba, final boolean withSeparator) {
        return toHex(ba, 0, ba.length, withSeparator);
    }

    public static String toHex(final byte[] ba, final int offset, final int length, final boolean withSeparator) {
        final char[] buf;
        if (withSeparator) {
            buf = new char[length * 3];
        } else {
            buf = new char[length * 2];
        }
        for (int i = offset, j = 0; i < offset + length;) {
            final char[] chars = toHexChars(ba[i++]);
            buf[j++] = chars[0];
            buf[j++] = chars[1];
            if (withSeparator) {
                buf[j++] = BYTE_SEPARATOR;
            }
        }
        return new String(buf);
    }

    public static String toHex(final byte b) {
        final char[] chars = toHexChars(b);
        return String.valueOf(chars);
    }

    private static char[] toHexChars(final int b) {
        final char left = HEX_DIGITS[(b >>> 4) & 0x0F];
        final char right = HEX_DIGITS[b & 0x0F];
        return new char[] { left, right };
    }
}

Related

1. toHex(char c)
2. toHex(final byte b)
3. toHex(final byte b)
4. toHex(final byte... bin)
5. toHex(final byte[] ba)
6. toHex(final byte[] bytes)
7. toHex(final byte[] bytes)
8. toHex(final byte[] bytes)
9. toHex(final byte[] bytes)