Java Utililty Methods Hex Calculate

List of utility methods to do Hex Calculate

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Description

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

Method

StringtoHexString(int val)
Quick conversion to hex string. 
return toHexString(val, 4);
StringtoHexString(int val, int minLength)
to Hex String 
StringBuilder sb = new StringBuilder();
while (val != 0) {
    switch (val & 0xf) {
    case 0x0:
        sb.append('0');
        break;
    case 0x1:
        sb.append('1');
...
StringtoHexString(int value, int len)
Returns Hexadecimal String of specified number of digits padding with zeroes if necessary 
String retval = "";
for (int i = (len - 1) * 4; i >= 0; i -= 4) {
    int j = value >> i & 0xF;
    if (j > 9) {
        j += LOWERCASE_ASCII_MIN - 10; 
    } else {
        j += NUMBER_ASCII_MIN; 
    retval += (char) j; 
return retval;
StringToHexString(int value, int length)
Format an integer to its hex representaion, with (at least) the given number of digits, left padded with '0' 
String answer = Integer.toHexString(value).toUpperCase();
int currentLength = answer.length();
if (currentLength < length) {
    answer = Zeroes.substring(0, length - currentLength) + answer;
return answer;
StringtoHexString(int value, int minLength)
to Hex String 
StringBuilder sb = new StringBuilder(Integer.toHexString(value).toUpperCase());
while (sb.length() < minLength) {
    sb.insert(0, '0');
return sb.toString();
StringtoHexString(int value, int numDigits)
Returns a base-10 integer as a hexadecimal number in String. 
StringBuilder result = new StringBuilder();
for (int i = (numDigits - 1); i >= 0; i--) {
    String digit = toHexDigit(value, i);
    result.append(digit);
return result.toString().toUpperCase();
StringtoHexString(int[] data)
to Hex String 
if (data == null)
    return "null";
StringBuilder stringBuilder = new StringBuilder(data.length * 5);
stringBuilder.append('[');
for (int i = 0; i < data.length; i++) {
    stringBuilder.append(String.format("0x%02X", data[i]));
    if (i + 1 < data.length)
        stringBuilder.append(", ");
...
StringtoHexString(int[] ia)
Get the hex string for the bytes. 
return toHexString(ia, 0, ia.length, 0);
StringtoHexString(int[] x, int bitsPerDigit)
to Hex String 
final int digitsPerLong = (59 / bitsPerDigit) + 1;
final StringBuilder b = new StringBuilder();
for (int i = 0; i < x.length;) {
    long a = 0;
    int j = 0;
    for (; i < x.length && j < digitsPerLong; j++) {
        a |= ((long) x[i] << (bitsPerDigit * j));
        i++;
...
StringtoHexString(Integer num)
to Hex String 
String hex = Integer.toHexString(num.intValue());
switch (hex.length()) {
case 0:
    hex = "00000000";
    break;
case 1:
    hex = "0000000" + hex;
    break;
...