Pace university

Server Version 1 

 

// Set up a Server that will receive a connection 

// from a client, send a string to the client, 

// and close the connection. 

import java.io.*; 

import java.net.*; 

import java.awt.*; 

 

public class Server extends Frame { 

  TextArea display; 

 

  public Server() 

  {  super( "Server" ); 

     display = new TextArea( 20, 5 ); 

     add( "Center", display ); 

     resize( 300, 150 ); 

     show(); 

  } 

 

  public void runServer() 

  {  ServerSocket server; 

     Socket connection; 

     PrintStream output; 

     DataInputStream input; 

 

     try { 

       server = new ServerSocket( 5000, 100 );  

// Open ServerSocket 

       connection = server.accept();    

 

// Wait for connection 

       display.setText( "Connection received...\n" ); 

       output = new PrintStrea m(connection.getOutputStream());    // Set up IO streams  

       input = new DataInputStream(connection.getInputStream()); 

       String serv = new String( "Connection successful\n\n"); 

       String c; 

       System.out.println("steps 1"); 

       c = input.readLine(); 

       System.out.println(c); 

       display.appendText(c); 

       System.out.println("steps 1"); 

       display.appendText("\n Receiving data Hello!\n\n"); 

       // The next two lines receive data from client 

       System.out.println("steps 1"); 

       for(int i = 0; i < serv.length(); i++) { 

          output.write( (int) serv.charAt( i ) ); display.appendText("\n Sent data.\n"); 

       } 

       System.out.println("steps 3"); 

       display.appendText("\nClosing socket.\n" ); 

       connection.close(); 

     } 

     catch ( IOException e ) { 

 

       e.printStackTrace(); 

     } 

  } 

 

---

 

2 

 

  public boolean handleEvent( Event e ) 

  {    if ( e.id == Event.WINDOW_DESTROY ) { 

       hide(); 

       dispose();  

       System.exit( 0 ); 

  } 

     return super.handleEvent( e ); 

  } 

 

  public static void main( String args[] ) 

  { 

     Server s = new Server(); 

 

     s.runServer(); 

  } 

 

} 

 

---

 

1 

Client Version 2 

 

 

 

 

 

 

 

 

BOHIEM BANK ATM 97'

 

 

 

 

 
 

 

   

// Sending the IP address and port number of the server to the telnet applet as a parameter 

 
 

 

 
 

 
 

 
 

  // Creating the GUI 

   

 
 

 
 

 
 

 
 

 
 

 
 

 

   

 
 

 
 

 
 

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