Java Utililty Methods URL Query Split

if (query == null || query.isEmpty()) {
    return new HashMap<>();
} else {
    String[] params = query.split("&");
    Map<String, String> map = new HashMap<>();
    for (String param : params) {
        String[] split = param.split("=");
        map.put(URLDecoder.decode(split[0], "UTF-8"),
...

Multimap<String, String> query_pairs = LinkedListMultimap.create();
String[] pairs = query.split("&");
for (String pair : pairs) {
    int idx = pair.indexOf("=");
    query_pairs.put(URLDecoder.decode(pair.substring(0, idx), "UTF-8"),
            URLDecoder.decode(pair.substring(idx + 1), "UTF-8"));
return query_pairs;
...

Map<String, String> query_pairs = new LinkedHashMap<String, String>();
String[] pairs = queryString.split("&");
for (String pair : pairs) {
    int idx = pair.indexOf("=");
    query_pairs.put(URLDecoder.decode(pair.substring(0, idx), "UTF-8"),
            URLDecoder.decode(pair.substring(idx + 1), "UTF-8"));
return query_pairs;
...

URL myURL = null;
try {
    myURL = new URL(url);
} catch (MalformedURLException e) {
    e.printStackTrace();
Map<String, String> query_pairs = new LinkedHashMap<String, String>();
String query = myURL.getQuery();
...

Map<String, String> queryPairs = new LinkedHashMap<String, String>();
String query = url.getQuery();
String[] pairs = query.split("&");
for (String pair : pairs) {
    int idx = pair.indexOf("=");
    String key = URLDecoder.decode(pair.substring(0, idx), "UTF-8");
    if (queryPairs.get(key) == null) {
        queryPairs.put(key, URLDecoder.decode(pair.substring(idx + 1), "UTF-8"));
...

final Map<String, List<String>> query_pairs = new LinkedHashMap<String, List<String>>();
final String[] pairs = url.getQuery().split("&");
for (String pair : pairs) {
    final int idx = pair.indexOf("=");
    final String key = idx > 0 ? URLDecoder.decode(pair.substring(0, idx), "UTF-8") : pair;
    if (!query_pairs.containsKey(key)) {
        query_pairs.put(key, new LinkedList<String>());
    final String value = idx > 0 && pair.length() > idx + 1
            ? URLDecoder.decode(pair.substring(idx + 1), "UTF-8")
            : null;
    query_pairs.get(key).add(value);
return query_pairs;