Java Utililty Methods ByteBuffer Contain

return contains(buffer.array(), buffer.arrayOffset() + buffer.position(), buffer.remaining(), b);

int len = subBuffer.remaining();
if (buffer.remaining() - len < 0)
 return false;
byte first = subBuffer.get(subBuffer.position());
int max = buffer.position() + (buffer.remaining() - len);
for (int i = buffer.position(); i <= max; i++) {
 if (buffer.get(i) != first) {
 while (++i <= max && buffer.get(i) != first) {
...