Java Utililty Methods URL Query Build

String query = url.getQuery();
String[] params = query.split("&");
Map<String, String> map = new HashMap<String, String>();
for (String param : params) {
    try {
        String name = param.split("=")[0];
        String value = param.split("=")[1];
        map.put(name, value);
...

Map<String, String> result = parse(query, encoding);
if (result == null) {
    return null;
} else {
    return result.get(key);

Map<String, String> parameters = new HashMap<String, String>();
if (queryString != null && queryString.trim().length() > 0) {
    for (String pair : queryString.split("&")) {
        int equals = pair.indexOf('=');
        if (equals == 0)
            throw new IllegalArgumentException("invalid query parameter: " + pair);
        String key = equals > 0 ? pair.substring(0, equals) : pair;
        String value = equals > 0 ? pair.substring(equals + 1) : null;
...

String q = url.getQuery();
if (q != null) {
    String[] qs = q.split("&");
    Map<String, String> queryParameters = new LinkedHashMap<>(qs.length);
    for (String qp : qs) {
        String[] qps = qp.split("=");
        if (qps.length == 2) {
            queryParameters.put(qps[0], qps[1]);
...

Map<String, List<String>> params = new HashMap<>();
String query = url.getQuery();
if (query != null) {
    for (String param : query.split("&")) {
        String pair[] = param.split("=");
        String key = URLDecoder.decode(pair[0], "UTF-8");
        String value = null;
        if (pair.length > 1) {
...

Map<String, String> params = new HashMap<String, String>();
String q = url.getQuery();
if (q == null)
    return params;
try {
    for (String p : q.split("&")) {
        String[] values = p.split("=", 2);
        if (values.length != 2)
...

if (url == null)
    throw new IllegalArgumentException("url == null");
URI uri = URI.create(url);
String query = uri.getQuery();
if (query == null)
    return Collections.emptyMap();
String[] params = query.split("&");
Map<String, String> paramMap = new HashMap<>();
...

Map<String, String> params = new HashMap<String, String>();
if (httpUrl == null) {
    return params;
URL url = null;
try {
    url = new URL(httpUrl);
} catch (MalformedURLException e) {
...

try {
    Map<String, String> params = new HashMap<String, String>();
    for (String param : query.split("&")) {
        String[] pair = param.split("=");
        String key = URLDecoder.decode(pair[0], "UTF-8");
        String value = URLDecoder.decode(pair[1], "UTF-8");
        params.put(key, value);
    return params;
} catch (UnsupportedEncodingException ex) {
    throw new AssertionError(ex);

Map<String, String> params = new HashMap<String, String>();
for (String kv : s.split("&")) {
    String[] parts = kv.split("=");
    if (parts.length != 2) {
        throw new MalformedURLException();
    try {
        String k = URLDecoder.decode(parts[0], "UTF-8");
...