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class EchoServer { 
  public static void main(String[] args) { 
    try { 
      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); 
      } 

      out.close(); 
      in.close(); 
      socket.close();  
    }
    catch (Exception e) { /*Handle exception*/ }   
  }
}

class EchoClient {
  public static void main(String[] args) {
    try {
      Socket socket = new Socket("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());
      }

      out.close();
      in.close();
      stdIn.close();
      socket.close();
    }
    catch (Exception e) { /*Handle exception*/ } 
  }
}