PingUoA

ping_uoa.java

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.util.concurrent.TimeUnit;

public class Main {
	final static int SLEEP_TIME = 7;
	
	public static void main(String[] args) {
		while (true) {
			try {
				final HttpURLConnection urlConn = (HttpURLConnection) new URL("http://www.uoa.gr").openConnection();
				urlConn.setConnectTimeout(1000 * 10);
				urlConn.connect();
				if (urlConn.getResponseCode() == HttpURLConnection.HTTP_OK)
					System.out.println("Ping successful!!!");
			} catch (final SocketTimeoutException e) {
				System.err.print("timeout...");
			} catch (IOException e) {
				e.printStackTrace();
			}
			
			try {
				System.err.println(" (wait...)");
				TimeUnit.MINUTES.sleep(SLEEP_TIME);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}