Greetings all,

I am trying to understand a piece of C++ code that I am trying to port
to Java.

void Buffer::packInteger(int value){

 int netval = htonl(value); // convert to network order (big-endian)
 data = (char *) realloc(data, datalen + 4); //allocate datalen + 4
bytes to data

 char* temp = data + datalen; //temp is allocated a pointer to (data
+datalen) ?

 memcpy(temp, &netval, 4); // copy the first 4 bytes from netval to
temp;
 datalen += 4; //increment datalen by 4

}
Now if I understood the comments in the code correctly, I can't seem
to understand how the integer called "value" is being packed even at
all in the code above!

My stab of the code above in Java is something like this -

public void packInteger(int value) {
                //b is defined as byte b[ ] = new byte[4];
               b[0] = (byte) ((val >> 24) & 255);
               b[1] = (byte) ((val >> 16) & 255);
               b[2] = (byte) ((val >> 8)  & 255);
               b[3] = (byte) (val &  255);
}

AFAICT, the code above shifts 24,26,8 and 0 places to the right and
then ANDs it with 255 to get the values at those position
respectively. Is this how it's done ? Or am I missing some critical
pieces. I think I am. :-(

Thanks!