Android Utililty Methods Byte Array to Hex Convert

List of utility methods to do Byte Array to Hex Convert

  1. HOME
  2. Android
  3. B
  4. Byte Array to Hex Convert

Description

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

Method

Stringbyte2hex(byte[] b)
bytehex 
String hs = "";
String stmp = "";
for (int n = 0; n < b.length; n++) {
    stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
    if (stmp.length() == 1)
        hs = hs + "0" + stmp;
    else
        hs = hs + stmp;
...
StringhexEncode(byte[] data)
hex Encode 
StringBuffer r = new StringBuffer();
for (int i = 0; i < data.length; i++) {
    byte v = data[i];
    r.append(HEXCHARS[(v >> 4) & 0xf]).append(HEXCHARS[v & 0xf]);
return r.toString();
StringencodeHex(byte[] data)
byte[] to hex 
int l = data.length;
char[] out = new char[l << 1];
for (int i = 0, j = 0; i < l; i++) {
    out[j++] = DIGITS_LOWER[(0xF0 & data[i]) >>> 4];
    out[j++] = DIGITS_LOWER[0x0F & data[i]];
return new String(out);
byte[]decodeHex(char[] data)
hex to byte[] 
int len = data.length;
if ((len & 0x01) != 0) {
    throw new RuntimeException("Odd number of characters.");
byte[] out = new byte[len >> 1];
for (int i = 0, j = 0; j < len; i++) {
    int f = toDigit(data[j], j) << 4;
    j++;
...
StringbytesToHex(byte[] data)
bytes To Hex 
if (data == null) {
    return null;
int len = data.length;
String str = "";
for (int i = 0; i < len; i++) {
    if ((data[i] & 0xFF) < 16)
        str = str + "0"
...
StringBuilderbytesToHexString(byte[] bytesArray)
bytes To Hex String 
if (bytesArray == null) {
    return null;
StringBuilder sBuilder = new StringBuilder();
for (byte b : bytesArray) {
    String hv = String.format("%02x", b);
    sBuilder.append(hv);
return sBuilder;
StringparseByte2HexStr(byte buf[])
parse Byte Hex Str 
StringBuffer sb = new StringBuffer();
for (int i = 0; i < buf.length; i++) {
    String hex = Integer.toHexString(buf[i] & 0xFF);
    if (hex.length() == 1) {
        hex = '0' + hex;
    sb.append(hex.toUpperCase());
return sb.toString();
StringbytesToHex(byte[] bytes)
Takes the provided byte array and converts it into a hexidecimal string with two characters per byte. 
return bytesToHex(bytes, false);
StringbytesToHex(byte[] bytes, boolean withSpaces)
Takes the provided byte array and converts it into a hexidecimal string with two characters per byte. 
StringBuilder sb = new StringBuilder();
for (byte hashByte : bytes) {
    int intVal = 0xff & hashByte;
    if (intVal < 0x10) {
        sb.append('0');
    sb.append(Integer.toHexString(intVal));
    if (withSpaces) {
...
StringbyteArrayToHexString(byte[] bytes)
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] = hexArray[v >>> 4];
    hexChars[j * 2 + 1] = hexArray[v & 0x0F];
return new String(hexChars);
...