import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

//#################################################################
  public class Ping {
//#################################################################

  public static void main(String[] args) {

  BufferedReader bfIn = null;

  /* Notes: (Ex: of valid host names)
   *   127.0.0.1 - same as localhost.
   *   localhost - local machine.
   *   www.yahoo.com
   */
  String strHost = "127.0.0.1";
  
  if ( args.length > 0 ) {
    strHost = args[0];
  }

    try {
        Runtime objRuntime = Runtime.getRuntime();
        Process objProcess = objRuntime.exec("ping " + strHost);

        if (objProcess == null) {
            System.out.println("Could not connect");
        }

        bfIn = new BufferedReader(new InputStreamReader(objProcess.getInputStream()));

        String strLine;

        while ((strLine = bfIn.readLine()) != null) {
            System.out.println(strLine);
        }
         bfIn.close();
        } catch (IOException e) {
          System.err.println(e.toString());
        }
    }
}