import java.io.BufferedInputStream;
import java.io.IOException;
import java.net.Socket;
import java.util.ArrayList;

public class DayTimeClient {

    public static void main(String[] args) {
        ArrayList<String> clients = new ArrayList<String>();
        clients.add("time-a.nist.gov");
        clients.add("time-b.nist.gov");
        clients.add("time-c.nist.gov");
        clients.add("time-d.nist.gov");

        for (String s : clients) {
            System.out.println("Trying to connect to " + s);

            try {
                Socket socket = new Socket(s, 13);
                socket.setSoTimeout(5000);
                BufferedInputStream bin = new BufferedInputStream(socket.getInputStream());
                while (true) {
                    int datum = bin.read();
                    if (datum == -1)
                        break;
                    System.out.write(datum);
                }
                // If we reach here we read the data from the server and printed out correctly so we need to stop
                break; // stops the loop and eventually the program
            } catch (IOException ex) {
                System.out.println("Failed to get data from" +s);
            }
        } // for loop continues if there is a connection problem
    }
}