/**
* Converts a byte array to a hexadecimal String. Each byte is presented by its two digit
* hex-code; 0x0A -> "0a", 0x00 -> "00". No leading "0x" is included in the result.
*
* @param value the byte array to be converted
* @return the hexadecimal string representation of the byte array
*/
public static String toHexString(byte[] value) {
if (value == null) {
return null;
}
StringBuffer buffer = new StringBuffer(2 * value.length);
int single;
for (int i = 0; i < value.length; i++) {
single = value[i] & 0xFF;
if (single < 0x10) {
buffer.append('0');
}
buffer.append(Integer.toString(single, 16));
}
return buffer.toString();
}
/**
* Converts a long value to a hexadecimal String of length 16. Includes leading zeros if
* necessary.
*
* @param value The long value to be converted.
* @return The hexadecimal string representation of the long value.
*/
public static String toFullHexString(long value) {
long currentValue = value;
StringBuffer stringBuffer = new StringBuffer(16);
for (int j = 0; j < 16; j++) {
int currentDigit = (int) currentValue & 0xf;
stringBuffer.append(HEX_DIGITS[currentDigit]);
currentValue >>>= 4;
}
return stringBuffer.reverse().toString();
}
/**
* Converts a int value to a hexadecimal String of length 8. Includes leading zeros if necessary.
*
* @param value The int value to be converted.
* @return The hexadecimal string representation of the int value.
*/
public static String toFullHexString(int value) {
int currentValue = value;
StringBuffer stringBuffer = new StringBuffer(8);
for (int i = 0; i < 8; i++) {
int currentDigit = currentValue & 0xf;
stringBuffer.append(HEX_DIGITS[currentDigit]);
currentValue >>>= 4;
}
return stringBuffer.reverse().toString();
}