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

StringtoHexaString(byte[] data)
to Hexa String 
return toHexaString(data, 0, -1);
StringtoHexaString(int value)
Returns a string representation of the integer argument as an unsigned integer in base 16. 
return Integer.toHexString(value);
StringtoHexByte(byte b)
to Hex Byte 
return String.format("0x%02X", b & 0xFF);
voidtoHexByte(byte b, StringBuffer sb)
to Hex Byte 
int n1 = (b & 0xF0) >> 4;
int n2 = (b & 0xF);
sb.append((char) (n1 < 10 ? n1 + '0' : (n1 - 10) + 'A'));
sb.append((char) (n2 < 10 ? n2 + '0' : (n2 - 10) + 'A'));
inttoHexByte(final char ch1, final char ch2)
to Hex Byte 
final int i1 = hexDigit(ch1);
final int i2 = hexDigit(ch2);
if (i1 >= 0 && i2 >= 0) {
    return (i1 << 4) | i2;
return -1;
StringtoHexByte(int bite)
Converts a byte to a hex String. 
return String.valueOf(toHexNibble(bite >> 4)) + toHexNibble(bite);
StringtoHexByte(int i)
Converts an integer to a 2-digit hexadecimal string. 
assert (i >= 0 && i < 256);
String s = Integer.toString(i, 16);
if (s.length() < 2)
    return "0" + s;
return s;
byte[]toHexByteArray(final byte[] buffer)
Generate a byte array that is a hex representation of a given byte array. 
return toHexByteArray(buffer, 0, buffer.length);
StringtoHexBytes(byte[] bytes)
to Hex Bytes 
StringBuilder buffer = new StringBuilder();
for (byte b : bytes) {
    buffer.append(String.format(" %02x", b));
return buffer.toString();
char[]toHexBytes(byte[] data)
to Hex Bytes 
if (data == null)
    return null;
int len = data.length;
char[] out = new char[len << 1];
for (int i = 0, j = 0; i < len; i++) {
    out[j++] = hexDigits[(0xF0 & data[i]) >>> 4];
    out[j++] = hexDigits[0x0F & data[i]];
return out;