Complier error concerning Client Server Application. Error in the server

Question

Hi I am trying to implement a client server application that will carry out basic calculations. However I am recienving this compiler error within the server class.
unreported exception java.io.IOException; must be caught or delcared to be thrown.
The code is pasted below.
Your help would be much appreciated.
Kind Regards
Ridha
import java.io.*;
import java.net.*;
import java.util.Hashtable;
public class Server
    public static void main(String []args)
        ServerSocket calcServer = null;
        try
            // Create a socket on server
            //ServerSocket ss = new ServerSocket(7);
            calcServer = new ServerSocket(7);
        catch (IOException e)
            System.out.println("Could not listen on port: 7.");
            System.exit(1);
        System.out.println("The Server is Running");
        // When clients connets, make the link and carry on
        Socket clientSocket = null;
        try
         clientSocket = calcServer.accept();
        catch (IOException e)
         System.err.println("Accept Failed");
         System.exit(1);
            // hashtable to manage list of online and offline users
            //Hashtable tOnlineUsers = new Hashtable(10);
            //Hashtable tOfflineUsers = new Hashtable(10);
            // Now start accepting connections from clients in a while loop
            // The server should run in an infinite loop
             // to get data to and from server
InputStream in = clientSocket.getInputStream(); < my error is here
                BufferedReader br = new BufferedReader(new InputStreamReader(in));
                OutputStream out = clientSocket.getOutputStream();
                PrintWriter pr = new PrintWriter(out, true);
            while(true)
                Worker w = new Worker(clientSocket);
                w.start();
            }   // End of while
        }// End of main()
}   // End of class

Answer 1

well, using my superb powers of reasoning and deduction, I can say that this is a lemon entry, watson. the line you kindly highlighted can potentially throw an IOException which you are not dealing with. deal with it