Why a different port number is shown

[Abhishek KumarSoni]

Hello friends.......i was trying socket programming code in which i found unexpected behaviour as follow:
This was my server code

package Socket;
import java.io.*;
import java.net.*;
public class server {
         public static void main(String... x)
         {
         server cl=new server();
         cl.go();
         }
         public void go()
         {
            try
            {
                ServerSocket ss=new ServerSocket(4001);
                Socket sock=ss.accept();
                int port=sock.getPort();
                System.out.println("My port number is"+port);
                PrintWriter pw=new PrintWriter(sock.getOutputStream());
                String str="abhishek";
                pw.println(str);
                pw.close();
                System.out.println(str);
                
                
            }
            catch(Exception ex)
            {
            System.out.println("server");
            }
                
         }
     }

And this is client code

package Socket;
import java.net.InetAddress;
import java.io.*;
import java.net.*;
public class client {
    public void go()
    {
        try
    {
         
        Socket s=new Socket("Addicted2Succes",4001);
         InputStreamReader isr=new InputStreamReader(s.getInputStream());
        BufferedReader br=new BufferedReader(isr);
        String advice =br.readLine();
        System.out.println("abhishek "+advice);
        br.close();
    }
    catch(Exception ex)
    {
        ex.printStackTrace();
    System.out.println("client");
    }}
        public static void main(String ... x)
        {
                 new client().go(); 
        }
    
    
}

I execute server code and after that client code
output printed was -> my port is 52340 .
Why this unexpected behaviour??It should be -> my port is 4001?

[Chan Ag]

Abhishek KumarSoni wrote:
This was my server code

............
    
                ServerSocket ss=new ServerSocket(4001);
                Socket sock=ss.accept();
                int port=sock.getPort();
                System.out.println("My port number is"+port);
      .........

...........
I execute server code and after that client code
output printed was -> my port is 52340 .
Why this unexpected behaviour??It should be -> my port is 4001?

Hint : Which socket is the variable sock pointing to? Is the port number of that socket 4001?

As an aside, you might want to consider renaming your class 'client' to 'Client' and class 'server' to 'Server'. I guess you already know why.