Java Utililty Methods Byte to Hex String

char[] digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
char[] tempArr = new char[2];
tempArr[0] = digit[(b >>> 4) & 0x0F];
tempArr[1] = digit[b & 0x0F];
return new String(tempArr);

int v = b & 0xFF;
String result = HEX_BYTE_STRINGS[v];
if (result == null) {
    result = Character.toString(HEX_CHAR_ARRAY[v >>> 4]) + HEX_CHAR_ARRAY[v & 0x0f];
    HEX_BYTE_STRINGS[v] = result;
return result;

StringBuffer sb = new StringBuffer();
for (int i = 0; i < buf.length; i++) {
    String hex = Integer.toHexString(buf[i] & 0xFF);
    if (hex.length() == 1) {
        hex = '0' + hex;
    sb.append(hex);
return sb.toString();

return longToHexStr(src, len, code);

StringBuilder toHex = new StringBuilder();
for (int i = 0; (null != b) && (i < b.length); i++) {
    if (space) {
        toHex.append(' ');
    char hi = Character.forDigit((b[i] >> 4) & 0x0F, 16);
    char lo = Character.forDigit(b[i] & 0x0F, 16);
    toHex.append(Character.toUpperCase(hi));
...

return byteToHexStr(bArray, false);

if ((_b < 0) || (_b > 0xf)) {
    return Integer.toHexString(_b & 0xFF);
} else {
    StringBuffer sb = new StringBuffer();
    sb.append('0');
    sb.append(hexChars[_b]);
    return sb.toString();

return Integer.toHexString(b & 0xFF) + " ";

char[] hexChar = new char[2];
int v = b & 0xFF;
hexChar[0] = hexArray[v >>> 4];
hexChar[1] = hexArray[v & 0x0F];
return new String(hexChar);

int left = (int) ((b & 0xf0) >> 4);
int right = (int) (b & 0x0f);
return Integer.toHexString(left) + Integer.toHexString(right);