public void add(byte[] array) {
int length = array.length;
while (data.length - size < length) doubleCapacity();
System.arraycopy(array, 0, data, size, length);
size += length;
}
public void add(byte x) {
if (size >= data.length) {
doubleCapacity();
add(x);
} else data[size++] = x;
}
