package regex;

import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static java.lang.System.out;

public class Ratios {

    private static String line = "272/273";

    public static void main(String[] args) {
        out.println(line);
        ratios(1);
        ratios(2);
    }

    private static void ratios(int numeratorDenominator) {
        out.println("matching group " + numeratorDenominator);
        Pattern pattern = Pattern.compile("(\\d+)\\/(\\d+)");
        Matcher matcher;
        matcher = pattern.matcher(line);
        while (matcher.find()) {
            try {
                out.println(matcher.group(numeratorDenominator));
            } catch (IndexOutOfBoundsException obe) {
            }
        }
    }
}