Server

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package SocketProgramming3_ECHO;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.io.*;

/**
 *
 * @author acer
 */
public class Server {
    private static final int port=9090;

    public static void main(String[] args) throws IOException {
        System.out.println("[Server] Waiting .....");
        ServerSocket waiter=new ServerSocket(port);
        //listen on that port
        Socket soc=waiter.accept();
        System.out.println("[Server] Accepted client request .....");
        //blocking line that waits for that accepting

        ///////////////////////////////Server reads client;s request/////////////////////////////
        BufferedReader reader=new BufferedReader(new InputStreamReader(soc.getInputStream()));
        String Serverreply=reply(reader.readLine());
        //System.out.println("[Sever] replied \n"+Serverreply);


         ///////////////////////////////Server sends reply/////////////////////////////
        PrintWriter out=new PrintWriter(soc.getOutputStream(),true);
        //printWritter(,AutoFlush=>'True')
        out.println("Server says "+Serverreply);

        soc.close();
        waiter.close();
        System.out.println("[Server] CLoseed connection .....");
    }

    public static String reply(String str){
        String response="you said : "+str+", I say:";
    if( "Hi".equals(str)|| "hi".equals(str)){
        response+="Hellowww";
    }
    else{
        response+="Welcome to Echo Server..............:) ";
    }
    return response;
    }

}