import java.rmi.*;
import java.math.*;

public class Client {

    public static void doIt(String host, String port, int digits) {
	String message = "";
	try {
		MyServer obj = (MyServer)Naming.lookup("//" +
			host + ":" + port + "/PiServer");
		System.out.println(obj.computePi(digits));

	} catch (Exception e) {
		System.out.println("Something went wrong: " +
		e.getMessage());
		e.printStackTrace();
	}

   }

    public static void main(String args[] ) {
    int    digits = 10;
    String host   = "yps";
    String port   = "";


    if ( args.length  >= 1 )	{
	try {
		digits = Integer.parseInt(args[0]);
	}
	catch ( NumberFormatException e )	{
		System.out.println("Hm , digits = " + args[0]);
		System.exit(1);
	}

    }
    if ( args.length >= 2 )	{
	host = args[1];
    }

    if ( args.length  == 3 )	{
	try {
		port = args[2];
		Integer.parseInt(port);
	}
	catch ( NumberFormatException e )	{
		System.out.println("Port = " + port + " is not valid.");
		System.exit(1);
	}

    }
    if ( args.length  > 3 )	{
	System.out.println("Usage: java Client [digits [host [port]]]");
	System.exit(1);
    }
    doIt(host, port, digits);
  }
}