Java Utililty Methods Long to Hex

List of utility methods to do Long to Hex

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Description

The list of methods to do Long to Hex are organized into topic(s).

Method

StringLong2HexString(long h)
Long Hex String 
try {
    return Long.toHexString(h);
} catch (Exception e) {
    e.printStackTrace();
return "0";
Stringlong2hexString(long x)
longhex String 
String s = "";
for (int ii = 0; ii < 16; ii++) {
    s = hex_digit[(int) ((x & (15L << (ii * 4))) >>> (ii * 4))] + s;
return s;
voidlong2HexString(StringBuilder buf, long value)
This method avoids the use on Long.toHexString, since this class may be used during the boot-phase when the Long class in not yet initialized. 
int rem = (int) (value & 0x0FL);
long q = value >>> 4;
if (q != 0) {
    long2HexString(buf, q);
if (rem < 10) {
    buf.append((char) ('0' + rem));
} else {
...
StringlongToHex(long a)
long To Hex 
byte[] b = new byte[8];
longToBytes(a, b, 0);
return bytesToHex(b);
StringlongToHex(long l)
Convert a long to a hex representation. 
return Long.toHexString(l);
StringlongToHex(long l, int length)
long To Hex 
String temp = Long.toHexString(l);
while (temp.length() < length * 2) {
    temp = "0" + temp;
return temp;
StringlongToHex(long num)
A quick method to convert num to a hexadecimal number. 
return (num < 16L) ? "0" + Long.toString(num) : Long.toString(num, 16);
StringlongToHex(long val, char delim)
long To Hex 
byte[] bytes = new byte[8];
for (int i = 7; i >= 0; i -= 1) {
    bytes[7 - i] = (byte) ((val >>> (i * 8)) & 0xFF);
return bytesToHex(bytes, delim);
StringlongToHexBytes(final long v)
Returns a string of spaced hex bytes in Big-Endian order. 
final long mask = 0XFFL;
final StringBuilder sb = new StringBuilder();
for (int i = 8; i-- > 0;) {
    final String s = Long.toHexString((v >>> i * 8) & mask);
    sb.append(zeroPad(s, 2)).append(" ");
return sb.toString();
byte[]longToHexBytes(long i)
long To Hex Bytes 
byte[] bytes = new byte[16];
oneByteToHexBytes((byte) ((i >>> 56) & 0xff), bytes, 0);
oneByteToHexBytes((byte) ((i >>> 48) & 0xff), bytes, 2);
oneByteToHexBytes((byte) ((i >>> 40) & 0xff), bytes, 4);
oneByteToHexBytes((byte) ((i >>> 32) & 0xff), bytes, 6);
oneByteToHexBytes((byte) ((i >>> 24) & 0xff), bytes, 8);
oneByteToHexBytes((byte) ((i >>> 16) & 0xff), bytes, 10);
oneByteToHexBytes((byte) ((i >>> 8) & 0xff), bytes, 12);
...