Get the Jyutping of a single Chinese character, data are parsed from cantonese.org

JyutpingConverter.java

package moe.yuuta.jyutpingconverter;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import java.io.IOException;
import java.util.*;
import java.util.stream.Collectors;

/**
 * Get the Jyutping of a single Chinese character, data are parsed from cantonese.org
 * Needs org.jsoup:jsoup.
 */
public class JyutpingConverter {
    public static List<Character> queryOnline(String character) throws IOException {
        Map<String, String> cookies = new HashMap<>(11);
        cookies.put("cantoDisplay", "jp");
        cookies.put("charDisplay", "s");
        cookies.put("mandDisplay", "none");
        cookies.put("searchAlphaEN", "false");
        cookies.put("searchAlphaJP", "false");
        cookies.put("searchAlphaPY", "false");
        cookies.put("searchAlphaYL", "false");
        cookies.put("searchHZSC", "true");
        cookies.put("searchHZTC", "false");
        cookies.put("toneColorHZ", "false");
        cookies.put("toneColorYY", "false");
        Document doc = Jsoup.connect("http://cantonese.org/search.php?q=" + character)
                .cookies(cookies)
                .get();
        Element table = doc.selectFirst(".results-table");
        if (table == null) return null;
        try {
            Elements trs = table.selectFirst("tbody").select(".result").select(".resulthead");

            return trs.stream()
                    .map(element -> {
                        String text = element.text();
                        String[] array = text.split(" ");
                        if (array.length < 1) {
                            return null;
                        }
                        return new Character(array[0],
                                text.substring(array[0].length()));
                    })
                    .collect(Collectors.toList());
        } catch (NullPointerException e) {
            return Collections.emptyList();
        }
    }

    public static class Character {
        private String term;
        private String jyutping;

        public Character(String term, String jyutping) {
            this.term = term;
            this.jyutping = jyutping;
        }

        @Override
        public String toString() {
            return String.format("%1$s (%2$s)", term, jyutping);
        }
    }
}