Client.java

/*********************
* Socket Client
* @file Client.java
* @author Wangai
**********************/

import java.net.*;
import java.io.*;
import java.util.NoSuchElementException;
import java.util.Scanner;

public class Client {

   public static void main(String [] args) {
      Socket client = null;
      String host = args[0];
      int port = Integer.parseInt(args[1]);
      try {
         client = new Socket(host, port);

         // Set up streams for server I/O
         InputStream inFromServer = client.getInputStream();
         DataInputStream input = new DataInputStream(inFromServer);

         OutputStream outToServer = client.getOutputStream();
         DataOutputStream output = new DataOutputStream(outToServer);
         
         //Set up stream for keyboard entry
         Scanner userEntry = new Scanner(System.in);
         
         // System.out.println("Server says " + input.readUTF());
         System.out.println(input.readUTF());
         
         int service, input1, input2;
         do {
            System.out.print("\nservice: ");
            service = userEntry.nextInt();
            System.out.print("input1 : ");
            input1 = userEntry.nextInt();
            System.out.print("input2 : ");
            input2 = userEntry.nextInt();

            //send the numbers
            output.writeInt(service);
            output.writeInt(input1);
            output.writeInt(input2);

            // System.out.println("\nSERVER> " + input.readUTF());
            
            System.out.println(input.readUTF());

         } while (service != 0);

      } catch (IOException e) {
         e.printStackTrace();
      }
      catch (NoSuchElementException ne){   //This exception may be raised when the server closes connection
         System.out.println("Connection closed");
      }
      finally {
         try {
            System.out.println("\n* Closing connection *");
            client.close();
         } catch (IOException ioEx) {
            System.out.println("Unable to disconnect");
            System.exit(1);
         }
      }
   }
}