Java Utililty Methods Byte Array to Hex

List of utility methods to do Byte Array to Hex

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Description

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

Method

StringbytesToHex(byte[] bytes, int size, char delim)
Convert bytes to hex string 
char[] hexChars;
if (bytes == null)
    return "";
if (delim == 0) {
    hexChars = new char[size * 2];
    for (int j = 0; j < size; j++) {
        int v = bytes[j] & 0xFF;
        hexChars[j * 2] = hexArray[v >>> 4];
...
StringbytesToHex(byte[] data)
Convert byte array to readable byte string. 
char[] hexChars = new char[data.length * 2];
for (int j = 0; j < data.length; j++) {
    int v = data[j] & 0xFF;
    hexChars[j * 2] = "0123456789ABCDEF".toCharArray()[v >>> 4];
    hexChars[j * 2 + 1] = "0123456789ABCDEF".toCharArray()[v & 0x0F];
return new String(hexChars);
StringbytesToHex(byte[] data)
This utility method is passed an array of bytes. 
StringBuffer retval = new StringBuffer();
for (int i = 0; i < data.length; i++) {
    retval.append(HEX[(data[i] >> 4) & 0x0F]);
    retval.append(HEX[data[i] & 0x0F]);
return retval.toString();
StringbytesToHex(byte[] data)
bytes To Hex 
StringBuffer buf = new StringBuffer();
for (int i = 0; i < data.length; i++) {
    buf.append(byteToHex(data[i]).toUpperCase());
return (buf.toString());
StringbytesToHex(byte[] data)
bytes To Hex 
return bytesToHex(data, 0, data.length);
StringbytesToHex(byte[] data)
bytes To Hex 
StringBuffer buf = new StringBuffer();
for (int i = 0; i < data.length; i++) {
    int halfbyte = (data[i] >>> 4) & 0x0F;
    int two_halfs = 0;
    do {
        if ((0 <= halfbyte) && (halfbyte <= 9))
            buf.append((char) ('0' + halfbyte));
        else
...
StringbytesToHex(byte[] data, char[] chars)
bytes To Hex 
int length = data.length;
char[] out = new char[length << 1];
for (int i = 0, j = 0; i < length; i++) {
    out[j++] = chars[(0xF0 & data[i]) >>> 4];
    out[j++] = chars[0x0F & data[i]];
return new String(out);
StringbytesToHex(byte[] data, int m, int n)
bytes To Hex 
char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
char[] temp = new char[n * 2];
int k = m + n;
for (int l = m; l < k; l++) {
    byte b = data[l];
    temp[l * 2] = hexDigits[b >>> 4 & 0x0f];
    temp[l * 2 + 1] = hexDigits[b & 0x0f];
return new String(temp);
StringbytesToHex(byte[] digest)
bytes To Hex 
StringBuffer buffer = new StringBuffer("");
for (int i = 0; i < digest.length; i++) {
    String hexValue = Integer.toHexString(digest[i] & 0xFF);
    if (hexValue.length() == 1) {
        buffer.append(0);
    buffer.append(hexValue);
return buffer.toString();
StringbytesToHex(byte[] in)
bytes To Hex 
StringBuffer hex = new StringBuffer();
for (int i = 0; i < in.length; i++) {
    int msb = (in[i] & 0xFF) / 16;
    int lsb = (in[i] & 0xFF) % 16;
    hex.append(hexChars[msb]);
    hex.append(hexChars[lsb]);
return hex.toString();
...