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

Stringbytes2HexString(byte... bytes)
Formats an array of bytes as a string showing values in hex. 
return bytes2HexStringWithSeparator(":", bytes);
Stringbytes2HexString(byte[] array)
bytes Hex String 
if (array == null || array.length == 0) {
    return null;
StringBuilder builder = new StringBuilder();
builder.append("[");
for (int i = 0; i < array.length; i++) {
    builder.append("0x");
    builder.append(byte2HexString(array[i]));
...
Stringbytes2HexString(byte[] b)
bytes Hex String 
if (b.length == 0) {
    return null;
StringBuilder sb = new StringBuilder("");
for (int i = 0; i < b.length; i++) {
    int value = b[i] & 0xFF;
    String hv = Integer.toHexString(value);
    if (hv.length() < 2) {
...
Stringbytes2HexString(byte[] b)
bytes Hex String 
StringBuilder sb = new StringBuilder(b.length << 2);
for (byte x : b) {
    int hi = (x & 0xf0) >> 4;
    int lo = x & 0x0f;
    sb.append(HEX_CHARS[hi]);
    sb.append(HEX_CHARS[lo]);
return sb.toString();
...
Stringbytes2HexString(byte[] b)
bytes Hex String 
String ret = "";
for (int i = 0; i < b.length; i++) {
    String hex = Integer.toHexString(b[i] & 0xFF);
    if (hex.length() == 1) {
        hex = '0' + hex;
    ret += hex.toUpperCase();
return ret;
Stringbytes2HexString(byte[] bytes)
bytes Hex String 
StringBuffer buffer = new StringBuffer();
int digital;
for (int i = 0; i < bytes.length; i++) {
    digital = bytes[i];
    if (digital < 0) {
        digital += 256;
    if (digital < 16) {
...
Stringbytes2HexString(byte[] bytes)
Converts an array of bytes to a string of two digits hex-representations 
StringBuffer resultBuffer = new StringBuffer();
for (int i = 0; i < bytes.length; i++) {
    resultBuffer.append(byte2Hex(bytes[i]));
return resultBuffer.toString();
Stringbytes2HexString(byte[] bytes)
Convert byte array to hex string. 
StringBuffer sb = new StringBuffer(bytes.length);
String sTemp;
for (int i = 0; i < bytes.length; i++) {
    sTemp = Integer.toHexString(0xFF & bytes[i]);
    if (sTemp.length() < 2) {
        sb.append(0);
    sb.append(sTemp.toUpperCase());
...
Stringbytes2HexString(byte[] bytes)
bytes Hex String 
if (bytes == null)
    return null;
int len = bytes.length;
if (len <= 0)
    return null;
char[] ret = new char[len << 1];
for (int i = 0, j = 0; i < len; i++) {
    ret[j++] = hexDigits[bytes[i] >>> 4 & 0x0f];
...
Stringbytes2HexString(byte[] src)
bytes Hex String 
StringBuilder stringBuilder = new StringBuilder("");
if (null != src && src.length > 0) {
    for (int i = 0; i < src.length; i++) {
        int j = src[i] & 0xFF;
        String str = Integer.toHexString(j);
        if (str.length() < 2) {
            stringBuilder.append(0);
        stringBuilder.append(str);
    return stringBuilder.toString();
return null;