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// Exception handling has been omitted for the sake of brevity
class EchoServer { 
  public static void main(String[] args) throws IOException { 
    ServerSocket serverSocket = new ServerSocket(10007); 
    Socket socket = serverSocket.accept();
			
    PrintWriter out = new PrintWriter(socket.getOutputStream(), true); 
    BufferedReader in = new BufferedReader(
      new InputStreamReader(socket.getInputStream())); 

    String inputLine; 
    while ((inputLine = in.readLine()) != null) { 
      System.out.println(inputLine); 
      out.println(inputLine); 
    }
      
    // close out, in, socket (preferably in a try-finally block)   
  }
}

class EchoClient {
  public static void main(String[] args) throws IOException { 
    Socket socket = new Socket("localhost""localhost", 9999);
						
    PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
    BufferedReader in = new BufferedReader(
      new InputStreamReader(socket.getInputStream()));

    BufferedReader stdIn = new BufferedReader(
      new InputStreamReader(System.in));
			
    String userInput;
    while ((userInput = stdIn.readLine()) != null) {
      out.println(userInput);
      System.out.println(in.readLine());
    } 

    // close out, in, stdIn, socket (preferably in a try-finally block)   
  }
}

// Exception handling has been omitted for the sake of brevity
class EchoServer {
  public static void main(String[] args) throws IOException {   
    SSLServerSocketFactory sslserversocketfactory =
      (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
    SSLServerSocket sslserversocket =
      (SSLServerSocket) sslserversocketfactory.createServerSocket(9999);
    SSLSocket sslsocket = (SSLSocket) sslserversocket.accept();

    PrintWriter out = new PrintWriter( sslsocket.getOutputStream(),true);
    BufferedReader in = new BufferedReader(
      new InputStreamReader( sslsocket.getInputStream()));
            
    String inputLine;             
    while ((inputLine = in.readLine()) != null) { 
      System.out.println(inputLine); 
      out.println(inputLine); 
    } 

    // close out, in, sslsocket (preferably in a try-finally block)
  }
}

class EchoClient {
  public static void main(String[] args) throws IOException {
    SSLSocketFactory sslsocketfactory =
      (SSLSocketFactory) SSLSocketFactory.getDefault();
    SSLSocket sslsocket =
      (SSLSocket) sslsocketfactory.createSocket("localhost""localhost", 9999);

    PrintWriter out = new PrintWriter(sslsocket.getOutputStream(), true);
    BufferedReader in = new BufferedReader(
      new InputStreamReader(sslsocket.getInputStream()));
			
    BufferedReader stdIn = new BufferedReader(
      new InputStreamReader(System.in));
            
    String userInput;
    while ((userInput = stdIn.readLine()) != null) {
      out.println(userInput);
      System.out.println(in.readLine());
    }
  
    // close out, in, stdIn, sslsocket (preferably in a try-finally block)
  }
}