Java Network programming client and server communication

In Java networking programming, examples of client and server communication:

First, the server listens to the code

 PackageCom.server;Importjava.io.IOException;ImportJava.io.ObjectInputStream;ImportJava.io.ObjectOutputStream;ImportJava.net.ServerSocket;ImportJava.net.Socket;Importcom.jim.Student; Public classQqserver {/**     * @paramargs*/     Public Static voidMain (string[] args) {//TODO auto-generated Method StubSystem.out.println ("Start Server ..."); Qqserver Server=NewQqserver (); }    //constructor Function     PublicQqserver () {Socket s; //Create serversocket on port No. 9999 monitoringServerSocket SS =NULL; Try{SS=NewServerSocket (9999); } Catch(IOException e) {//TODO auto-generated Catch blockE.printstacktrace (); } System.out.println ("The server is listening ..."); Try{System.out.println ("Start waiting for connection ..."); S= Ss.accept ();//blocking, waiting for connectionSYSTEM.OUT.PRINTLN ("Client connection succeeded"); //Receive StreamObjectInputStream ois=NewObjectInputStream (S.getinputstream ()); //Send StreamObjectOutputStream Oos =NewObjectOutputStream (S.getoutputstream ()); //Receive student ObjectsStudent stu =(Student) ois.readobject ();                System.out.println (Stu.getname ()); //Send Student ObjectOos.writeobject (NewStudent ("Server")); } Catch(Exception e) {//TODO auto-generated Catch blockE.printstacktrace (); }         }        }

The client's code:

 Packagecom.client;ImportJava.io.*;Importjava.net.*;Importcom.jim.Student; Public classqqclient {/**     * @paramargs*/     Public Static voidMain (string[] args) {//TODO auto-generated Method StubSystem.out.println ("Start qqclient ..."); Try{qqclient Client=Newqqclient (); } Catch(IOException e) {//TODO auto-generated Catch blockE.printstacktrace (); }    }        //constructor Function     PublicQqclient ()throwsIOException {//String address= "127.0.0.1"; //int port = 9999;        Try{Socket s=NewSocket ("127.0.0.1", 9999); Student Stu=NewStudent ("Jim"); //send a message to the serverObjectOutputStream oos=NewObjectOutputStream (S.getoutputstream ()); //objectinputstream ois=new ObjectInputStream (S.getinputstream ()); //accept the message from the serverObjectInputStream ois=NewObjectInputStream (S.getinputstream ()); //sending objects to the server//Oos.writeobject (New Student ("OKK"));Oos.writeobject (STU); //objects returned by the receiving serverStudent Re_stu =(Student) ois.readobject ();                                System.out.println (Re_stu.getname ()); } Catch(Exception e) {//TODO auto-generated Catch blockE.printstacktrace (); }            }}

Object objects that are transferred on the client and the service

 PackageCom.jim; Public classStudentImplementsjava.io.serializable{PrivateString name; Private intAge ; PrivateString address;  PublicString GetName () {returnname; }     Public voidsetName (String name) { This. Name =name; }     Public intGetage () {returnAge ; }     Public voidSetage (intAge ) {         This. Age =Age ; }     PublicString getaddress () {returnaddress; }     Public voidsetaddress (String address) { This. Address =address; }        /**     * @paramName * Construction Method*/     PublicStudent (String name) { This. Name =name; }        /**     * @param      *      */     Public voidStudy () {SYSTEM.OUT.PRINTLN ( This. Name + "is studing"); }    }

Java Network programming client and server communication