gistfile1.txt

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.concurrent.TimeUnit;

public class OSBuddyTest {

    @SuppressWarnings("InfiniteLoopStatement")
    public static void main(String[] args) {

        String[] names = {"GoogleAPI", "OSBuddyAPI"};
        String[] URLs = {"https://storage.googleapis.com/osbuddy-exchange/summary.json", "https://rsbuddy.com/exchange/summary.json"};

        String[] summaries = {null, null};
        long[] times = {0, 0};

        boolean[] first = {true, true};
        while (true) {
            for (int a = 0; a < 2; a++) {
                try {
                    HttpURLConnection connectURL = (HttpURLConnection) new URL(URLs[a]).openConnection();
                    connectURL.setRequestMethod("GET");
                    connectURL.setConnectTimeout(30000);
                    connectURL.setReadTimeout(15000);
                    try (InputStream is = connectURL.getInputStream(); InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr)) {
                        String summary = br.readLine();
                        if (summaries[a] == null) { // Initialize, no println
                            summaries[a] = summary;
                            times[a] = System.currentTimeMillis();
                            System.out.println("Initialized " + names[a]);
                        } else if (!summaries[a].equals(summary)) {
                            long now = System.currentTimeMillis();
                            if (!first[a]) {
                                System.out.println(names[a] + " updated after " + ((now - times[a]) / 60000D) + " minutes");
                            }
                            first[a] = false;
                            times[a] = now;
                            summaries[a] = summary;
                        }
                    }
                } catch (IOException e) {e.printStackTrace();}
            }
            try {
                Thread.sleep(TimeUnit.SECONDS.toMillis(5));
            } catch (InterruptedException e) {e.printStackTrace();}
        }
    }
}