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Java网络编程说明：网络编程，分为两种一种是TCP、另一种是UDP方式。我们分别写一下TCP、UDP端的Server和Client简单演示代码。TCP：Severimportjava.io.DataInputStream;importjava.io.IOException;importjava.io.InputStream;importjava.net.ServerSocket;importjava.net.Socket;publicclassTCPServer{publicstaticvoidmain(String[]args){try{ServerSocketsocket=newServerSocket(4444);while(true){Socketsc=socket.accept();InputStreaminstr=sc.getInputStream();DataInputStreamdataInputStream=newDataInputStream(instr);System.out.println(dataInputStream.readUTF());}}catch(IOExceptione){e.printStackTrace();}}}Clientimportjava.io.DataOutputStream;importjava.io.IOException;importjava.io.OutputStream;importjava.net.Socket;importjava.net.UnknownHostException;publicclassTCPClient{publicstaticvoidmain(String[]args){try{Socketsocket=newSocket("127.0.0.1",4444);OutputStreamoStream=socket.getOutputStream();DataOutputStreamdataOutputStream=newDataOutputStream(oStream);dataOutputStream.writeUTF("Hello");}catch(UnknownHostExceptione){e.printStackTrace();}catch(IOExceptione){e.printStackTrace();}}}UDP：Server：importjava.io.IOException;importjava.net.DatagramPacket;importjava.net.DatagramSocket;importjava.net.SocketException;publicclassUDPServer{publicstaticvoidmain(String[]args){try{byte[]buffer=newbyte[1024];DatagramSocketsocket=newDatagramSocket(4444);DatagramPacketpacket=newDatagramPacket(buffer,buffer.length);while(true){socket.receive(packet);System.out.println(newString(buffer,0,packet.getLength()));}}catch(SocketExceptione){e.printStackTrace();}catch(IOExceptione){e.printStackTrace();}}}Clientimportjava.io.IOException;importjava.net.DatagramPacket;importjava.net.DatagramSocket;importjava.net.InetSocketAddress;importjava.net.SocketException;publicclassUDPClient{publicstaticvoidmain(String[]args){byte[]buffer=null;buffer=newString("hello").getByt
