Java Utililty Methods Byte to Hex

char hexDigit[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
char[] array = { hexDigit[(b >> 4) & 0x0f], hexDigit[b & 0x0f] };
return new String(array);

String str = "";
if (((int) b & 0xff) < 0x10) {
    str += "0";
str += Long.toString((int) b & 0xff, 16);
return str.toUpperCase();

int v = b & 0xFF;
return new String(new char[] { hexArray[v >>> 4], hexArray[v & 0x0F] });

char[] hexChars = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
int high = ((b & 0xf0) >> 4);
int low = (b & 0x0f);
buf.append(hexChars[high]);
buf.append(hexChars[low]);

final char[] hexArray = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
int v = bytevalue & 0xFF;
return new String(new char[] { hexArray[v >>> 4], hexArray[v & 0x0F] });

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

int l = (c & 0x0f);
int h = (c & 0xf0) >> 4;
char H;
char L;
H = h < 0x0A ? (char) (0x30 + h) : (char) (0x41 + (h - 0x0A));
L = l < 0x0A ? (char) (0x30 + l) : (char) (0x41 + (l - 0x0A));
return "" + H + L;

String hex = "";
for (int i = 0; i < bytes.length; i++) {
    hex += Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1);
return hex;

StringBuilder sb = new StringBuilder();
for (byte b : data) {
    sb.append(String.format("%02X", b));
return sb.toString();

int hi = (val & 0xF0) >> 4;
int lo = (val & 0x0F);
return "" + HEX.charAt(hi) + HEX.charAt(lo);