import java.io.BufferedReader;
import java.io.IOException;
 
  /**
     A telephone that takes simulated keystrokes and voice input
     from the user and simulates spoken text.
  */
public class Telephone
{
    /**
       Construct phone object.
       @param aReader that reads text from a character-input stream
    */
  public Telephone(BufferedReader aReader)
    {
      reader = aReader;
    }
 
    /**
       Speak a message to System.out.
       @param output the text that will be "spoken"
    */
  public void speak(String output)
    {
      System.out.println(output);
    }
 
    /**
       Loops reading user input and passes the input to the 
       Connection object's methods dial, record or hangup.
       @param c the connection that connects this phone to the 
       voice mail system
    */
  public void run(Connection c) throws IOException
    {
      boolean more = true;
      while (more)
      {
        String input = reader.readLine();
        if (input == null) return;
        if (input.equalsIgnoreCase("H"))
          c.hangup();
        else if (input.equalsIgnoreCase("Q"))
          more = false;
        else if (input.length() == 1 
                 && "1234567890#".indexOf(input) >= 0)
          c.dial(input);
        else            
          c.record(input);
      }
    }
 
  private BufferedReader reader;
}