A.getAddress() B.getPort() C.getSocketAddress() D.send(DatagramPacketp)
A.DatagramPacketdp=newDatagramPacket(byte[]data,intlength,InetAddressremoteAddr,intremotePort) B.DatagramPacketdp=newDatagramPacket(byte[]data,intoffset,intlength) C.DatagramPacketdp=newDatagramPacket(byte[]data,intlength) D.以上都不對
A.DatagramSocket B.DatagramPacket C.InetAddress D.以上都不對