question: method to set the opcode . concode_field_sep int payloadOffset concode_elem_sep short HW_MAX_LEN concode_elem_sep byte[] targetHWAddr concode_elem_sep jND_BYTE2 protAddrTypeNo concode_elem_sep byte[] srcProtAddr concode_elem_sep byte[] pload concode_elem_sep int ARP_REPLY concode_elem_sep int headerOffset concode_elem_sep short PROT_MAX_LEN concode_elem_sep jND_BYTE2 hwAddrTypeNo concode_elem_sep jND_BYTE1 hwLenNo concode_elem_sep int RARP_REQUEST concode_elem_sep int HEADER_LEN concode_elem_sep jND_BYTE1 protLenNo concode_elem_sep byte[] srcHWAddr concode_elem_sep int RARP_REPLY concode_elem_sep jND_BYTE2 opcodeNo concode_elem_sep byte[] targetProtAddr concode_elem_sep int ARP_REQUEST concode_field_sep byte[] sourceHWAddress concode_elem_sep void sourceHWAddress concode_elem_sep jND_BYTE1 protocolAddressLength concode_elem_sep void protocolAddressLength concode_elem_sep byte[] targetProtocolAddress concode_elem_sep void targetProtocolAddress concode_elem_sep byte[] sourceProtocolAddress concode_elem_sep void sourceProtocolAddress concode_elem_sep byte[] payload concode_elem_sep void payload concode_elem_sep byte[] build concode_elem_sep jND_BYTE2 protocolAddressType concode_elem_sep void protocolAddressType concode_elem_sep byte[] targetHWAddress concode_elem_sep void targetHWAddress concode_elem_sep void parse concode_elem_sep void parse concode_elem_sep jND_BYTE2 opcode concode_elem_sep void opcode concode_elem_sep jND_BYTE1 hwAddressLength concode_elem_sep void hwAddressLength concode_elem_sep jND_BYTE2 hwAddressType concode_elem_sep void hwAddressType
target: void function ( jND_BYTE2 arg0 ) { opcodeNo = arg0 ; }