Java Utililty Methods Byte Array to Binary

StringBuilder str = new StringBuilder();
for (int i = 0; i < b.length; i++) {
 if (i > 0)
 str.append('_');
 str.append(byte2Binary(b[i]));
return str.toString();

StringBuffer sb = new StringBuffer();
for (byte b : bytes) {
 sb.append(Integer.toBinaryString(b));
return sb.toString();

int i = bytesToInt(b);
String binString = Integer.toBinaryString(i);
while (binString.length() < byteLength * 8) {
 binString = "0" + binString;
return binString;

char[] binChars = new char[bytes.length * 8];
int idx = 0;
for (int i = 0; i < bytes.length; i++) {
 for (int bit = 7; bit >= 0; bit--, idx++)
 binChars[idx] = (((bytes[i] & 0xff) >> bit) & 0x01) != 0 ? '1' : '0';
return new String(binChars);

StringBuffer sb = new StringBuffer();
for (int i = 0; i < b.length; i++) {
 String bits = Integer.toBinaryString(b[i] & 0xFF);
 while (bits.length() < 8) {
 bits = "0" + bits;
 if (i > 0) {
 sb.append(" ");
...

StringBuffer sb = new StringBuffer();
for (int i = 0; i < buf.length; i++) {
 sb.append(byteToBits(buf[i]));
 sb.append(",");
return sb.toString();