Java Utililty Methods Hex Convert To

List of utility methods to do Hex Convert To

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Description

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

Method

intfromHex(String s, boolean hexIsDefault)
from Hex 
int radix = hexIsDefault ? 16 : 10;
int res = 0;
int pos = 0;
int sign = 1;
if (s.charAt(0) == '-') {
    pos += 1;
    sign = -1;
if ((!hexIsDefault) && s.regionMatches(pos, hexReprPrefix, 0, 2)) {
    pos += 2;
    radix = 16;
int max = s.length();
for (; pos < max; pos++) {
    int d = toDigit(s.charAt(pos));
    if ((d < 0) || (radix <= d))
        return res;
    res = res * radix + d;
return res * sign;
byte[]fromHex(String src)
from Hex 
String[] hex = src.split(" ");
byte[] b = new byte[hex.length];
for (int i = 0; i < hex.length; i++) {
    b[i] = (byte) (Integer.parseInt(hex[i], 16) & 0xff);
return b;
byte[]fromHex(String str)
Converts a hex string into an array of bytes. 
char[] chars = str.toCharArray();
byte[] bytes = new byte[chars.length / 2];
for (int i = 0; i < chars.length; i += 2) {
    int j = i >> 1;
    int b = 0;
    for (int k = 0; k < 2; k++) {
        int ch = chars[i + k];
        switch (ch) {
...
StringfromHex(String str)
from Hex 
StringBuffer buff = new StringBuffer();
for (int i = 0; i < str.length(); i++) {
    if (str.charAt(i) == '\\') {
        buff.append(Integer.valueOf(str.substring(i + 4, i + 6), 16));
    } else {
        buff.append(str.charAt(i));
return buff.toString();
byte[]fromHex(String string)
from Hex 
if ((string.length() & 1) != 0) {
    throw new IllegalArgumentException("String length must be even");
int rl = string.length() / 2;
byte[] result = new byte[rl];
for (int i = 0; i < rl; i++) {
    String hex = string.substring(i * 2, i * 2 + 2);
    result[i] = (byte) Integer.parseInt(hex, 16);
...
byte[]fromHex(String text)
Utility method which converts a hex string to a byte[] 
byte[] result = new byte[text.length() / 2];
for (int i = 0; i < result.length; i++)
    result[i] = (byte) ((byte) ((byte) 0xf0 & ((getByte(text.charAt(2 * i))) << 4))
            | getByte(text.charAt(2 * i + 1)));
return result;
byte[]fromHex(String[] data)
from Hex 
StringBuilder sb = new StringBuilder();
for (String s : data) {
    sb.append(s);
return fromHex(sb.toString());
intfromHex2B(String src)
from Hex B 
byte[] b = fromHex(src);
int position = 0;
int i = (b[position++] & 0xff);
i |= (b[position++] & 0xff) << 8;
return i;
longfromHex8B(String src)
from Hex B 
byte[] b = fromHex(src);
int position = 0;
long l = (b[position++] & 0xff);
l |= (long) (b[position++] & 0xff) << 8;
l |= (long) (b[position++] & 0xff) << 16;
l |= (long) (b[position++] & 0xff) << 24;
l |= (long) (b[position++] & 0xff) << 32;
l |= (long) (b[position++] & 0xff) << 40;
...
byte[]fromHexa(String s)
from Hexa 
byte[] ret = new byte[s.length() / 2];
for (int i = 0; i < ret.length; i++) {
    ret[i] = (byte) Integer.parseInt(s.substring(i * 2, i * 2 + 2), 16);
return ret;