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

StringbyteToHex(byte[] array, String separator)
Converts a byte array to a hex string. 
assert array != null;
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < array.length; i++) {
    if (i != 0) {
        buffer.append(separator);
    if ((array[i] & 0xff) < 0x10) {
        buffer.append("0");
...
StringbyteToHex(byte[] b, int size)
byte To Hex 
return byteToHex(b, size, true);
StringbyteToHex(byte[] base)
byte To Hex 
char[] c = new char[base.length * 2];
int i = 0;
for (byte b : base) {
    int j = b;
    j = j + 128;
    c[i++] = TOHEX[j / 0x10];
    c[i++] = TOHEX[j % 0x10];
return new String(c);
StringbyteToHex(byte[] buf)
converting a byte[] to it's hexadecimal format String 
if (buf == null)
    return null;
return byteToHex(buf, 0, buf.length);
StringbyteToHex(byte[] buffer)
byte To Hex 
StringBuffer hexString = new StringBuffer();
String hex;
int iValue;
for (int i = 0; i < buffer.length; i++) {
    iValue = buffer[i];
    if (iValue < 0)
        iValue += 256;
    hex = Integer.toString(iValue, 16);
...
StringByteToHex(byte[] bytes)
Byte To Hex 
StringBuffer sha1StrBuff = new StringBuffer();
for (int i = 0; i < bytes.length; ++i) {
    if (Integer.toHexString(255 & bytes[i]).length() == 1) {
        sha1StrBuff.append("0").append(Integer.toHexString(255 & bytes[i]));
    } else {
        sha1StrBuff.append(Integer.toHexString(255 & bytes[i]));
return sha1StrBuff.toString();
StringbyteToHex(byte[] content, int nLength)
byte To Hex 
StringBuilder sb = new StringBuilder();
int nPos = 0;
while (nPos < nLength) {
    int nByteLength = sb.length();
    sb.append(toHex(content[nPos], 2)).append(" ");
    nPos++;
return sb.toString();
...
StringbyteToHex(byte[] raw)
byte To Hex 
String hex_tab = "0123456789abcdef";
StringBuffer sb = new StringBuffer();
for (int i = 0; i < raw.length; i++) {
    byte b = raw[i];
    sb.append(hex_tab.charAt((b & 0xF0) >> 4));
    sb.append(hex_tab.charAt(b & 0xF));
return sb.toString();
...
StringbyteToHex(final byte b)
byte To Hex 
final char byteHexChar1 = HEX_CHARS[(b & 0xf0) >> 4];
final char byteHexChar2 = HEX_CHARS[b & 0x0f];
return byteHexChar1 + "" + byteHexChar2;
StringbyteToHex(final byte b)
Convert a byte into a hex string. 
StringBuilder sb = new StringBuilder(2);
sb.append(hexChar[(b & 0xF0) >>> 4]);
sb.append(hexChar[b & 0x0F]);
return sb.toString();