import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

public class FuelPreisService {

    public static void main(String[] args) throws Exception {

        String siteAddress = "https://www.globalpetrolprices.com/gasoline_prices/?literGalon=1&currency=EUR";
        String httpContent = getContentOfHTTPPage(siteAddress);
        List<String> preisFuel = getPreisFuel(httpContent);
        System.out.println(preisFuel);

    }


    private static List<String> getPreisFuel(String httpContent) throws Exception {

        List<String> result = new ArrayList<String>();

        String[] array1 = httpContent.split("data=");
        String st1 = array1[1];

        String[] array2 = st1.split("&titles");
        String prices = array2[0];

        String[] array3 = prices.split(",");
        for (int i = 0; i < array3.length; i++) {
        result.add((array3[i]));
        }

        return result;

    }


    private static String getContentOfHTTPPage(String pageAddress) throws Exception {

        StringBuilder sb = new StringBuilder();
        URL pageURL = new URL(pageAddress);
        URLConnection uc = pageURL.openConnection();
        BufferedReader br = new BufferedReader(new InputStreamReader(uc.getInputStream()));
        try {
            String inputLine;
            while ((inputLine = br.readLine()) != null) {
                sb.append(inputLine);
            }
        } finally {
            br.close();
        }

        return sb.toString();

    }

}