Java – ByteToHex and CharToHex

public static String byteToHex(byte b) {
    // Returns hex String representation of byte b
    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);
}
public static String charToHex(char c) {
    // Returns hex String representation of char c
    byte hi = (byte) (c >>> 8);
    byte lo = (byte) (c & 0xff);
    return byteToHex(hi) + byteToHex(lo);
}