Java Utililty Methods Byte Array to Hex String

List of utility methods to do Byte Array to Hex String

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Description

The list of methods to do Byte Array to Hex String are organized into topic(s).

Method

StringbytesToHexString(byte[] bytes)
Converts an array of bytes to a string representing the bytes in hexadecimal form. 
StringBuilder sb = new StringBuilder(bytes.length * 2);
for (byte b : bytes) {
    String hex = Integer.toHexString(0x0100 + (b & 0x00FF)).substring(1);
    if (hex.length() < 2) {
        sb.append("0");
    sb.append(hex);
return sb.toString();
StringbytesToHexString(byte[] bytes)
bytes To Hex String 
if (bytes == null) {
    return "";
StringBuffer buff = new StringBuffer();
int len = bytes.length;
for (int j = 0; j < len; j++) {
    if ((bytes[j] & 0xff) < 16) {
        buff.append('0');
...
StringbytesToHexString(byte[] bytes)
bytes To Hex String 
if (bytes == null) {
    return null;
StringBuffer result = new StringBuffer(bytes.length * 2);
for (int i = 0; i < bytes.length; i++) {
    result.append(Character.forDigit((bytes[i] & 0xF0) >> BITS_PER_NIBBLE, HEX_RADIX));
    result.append(Character.forDigit(bytes[i] & 0x0F, HEX_RADIX));
return result.toString();
StringbytesToHexString(byte[] bytes)
Converts a byte array to its 2-digit hexadecimal representation. 
StringBuilder sb = new StringBuilder();
for (byte b : bytes) {
    sb.append(String.format("%1$2s", Integer.toHexString(b & 0xFF)).replaceAll(" ", "0").toUpperCase());
    sb.append(" ");
sb.delete(sb.length() - 1, sb.length());
return sb.toString();
StringbytesToHexString(byte[] bytes)
bytes To Hex String 
return bytesToHexString(bytes, 0);
StringbytesToHexString(byte[] bytes)
bytes To Hex String 
final char[] buf = new char[bytes.length * 2];
byte b;
int c = 0;
for (int i = 0, z = bytes.length; i < z; i++) {
    b = bytes[i];
    buf[c++] = DIGITS[(b >> 4) & 0xf];
    buf[c++] = DIGITS[b & 0xf];
return new String(buf);
StringbytesToHexString(byte[] bytes)
The fastest method to convert a byte array to hex string. 
char[] hexChars = new char[bytes.length * 2];
int v;
for (int j = 0; j < bytes.length; j++) {
    v = bytes[j] & 0xFF;
    hexChars[j * 2] = HEX_CHARS[v / 16];
    hexChars[j * 2 + 1] = HEX_CHARS[v % 16];
return new String(hexChars);
...
StringbytesToHexString(byte[] bytes)
bytes To Hex String 
StringBuffer buf = new StringBuffer(bytes.length * 2);
for (byte b : bytes) {
    String s = Integer.toString(0xFF & b, 16);
    if (s.length() < 2)
        buf.append('0');
    buf.append(s);
return buf.toString();
...
StringbytesToHexString(byte[] data)
Converts a byte array to a string with hex values. 
StringBuilder hexStrBuff = new StringBuilder(data.length * 2);
for (byte aData : data) {
    String hexByteStr = Integer.toHexString(aData & 0xff).toUpperCase();
    if (hexByteStr.length() == 1) {
        hexStrBuff.append("0");
    hexStrBuff.append(hexByteStr);
return hexStrBuff.toString();
StringbytesToHexString(byte[] data)
bytes To Hex String 
StringBuilder valueHex = new StringBuilder();
for (int i = 0, tmp; i < data.length; i++) {
    tmp = data[i] & 0xff;
    if (tmp < 16) {
        valueHex.append(0);
    valueHex.append(Integer.toHexString(tmp));
return valueHex.toString();