Java Utililty Methods URL Build

if (query == null) {
    return "";
final StringBuilder builder = new StringBuilder();
for (final Map.Entry<String, Object> entry : query.entrySet()) {
    if (builder.length() > 0) {
        builder.append('&');
    try {
        builder.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
    } catch (final UnsupportedEncodingException e) {
    if (entry.getValue() != null) {
        builder.append('=');
        try {
            builder.append(URLEncoder.encode(entry.getValue().toString(), "UTF-8"));
        } catch (final UnsupportedEncodingException e) {
return builder.toString();

if ((query == null) || query.isEmpty()) {
    return "";
return query.entrySet().stream()
        .map(entry -> createQueryElement(entry.getKey(),
                (entry.getValue() == null) ? null : entry.getValue().toString()))
        .reduce((s1, s2) -> s1 + "&" + s2).orElse("");

StringBuilder localStringBuilder = new StringBuilder();
for (Map.Entry<String, Object> localEntry : paramMap.entrySet()) {
    if (localStringBuilder.length() > 0) {
        localStringBuilder.append('&');
    try {
        localStringBuilder.append(URLEncoder.encode((String) localEntry.getKey(), "UTF-8"));
    } catch (UnsupportedEncodingException localUnsupportedEncodingException1) {
...

StringBuilder queryString = new StringBuilder();
for (Map.Entry<String, Object> entry : paramMap.entrySet()) {
    String key = entry.getKey();
    Object value = entry.getValue();
    if (value != null) {
        if (List.class.isAssignableFrom(value.getClass())) {
            List<Object> vals = (List<Object>) value;
            for (Object e : vals) {
...

if (query == null) {
    return "";
} else {
    StringBuilder builder = new StringBuilder();
    Iterator<Entry<String, Object>> it = query.entrySet().iterator();
    while (it.hasNext()) {
        Entry<String, Object> entry = it.next();
        if (builder.length() > 0) {
...

StringBuilder sb = new StringBuilder();
boolean first = true;
for (Map.Entry<String, String> param : params.entrySet()) {
    if (!first) {
        sb.append("&");
    sb.append(URLEncoder.encode(param.getKey(), "UTF-8")).append("=")
            .append(URLEncoder.encode(param.getValue(), "UTF-8"));
...

StringBuffer queryString = new StringBuffer(20 * parameters.size());
for (Iterator it = parameters.entrySet().iterator(); it.hasNext();) {
    Map.Entry parameter = (Map.Entry) it.next();
    queryString.append(URLEncoder.encode((String) parameter.getKey(), "UTF-8"));
    queryString.append('=');
    queryString.append(URLEncoder.encode(String.valueOf(parameter.getValue()), "UTF-8"));
    if (it.hasNext())
        queryString.append('&');
...

StringBuilder sb = new StringBuilder();
Iterator<Map.Entry<String, Object>> entries = params.entrySet().iterator();
while (entries.hasNext()) {
    Map.Entry<String, Object> e = entries.next();
    if (sb.length() > 0) {
        sb.append('&');
    sb.append(URLEncoder.encode((String) e.getKey(), "UTF-8")).append('=')
...

StringBuffer buf = new StringBuffer();
boolean firstParam = true;
try {
    for (Map.Entry<String, Object> entry : queryParams.entrySet()) {
        if (entry.getValue() == null)
            continue;
        if (entry.getValue() instanceof List<?>) {
            List<?> values = (List<?>) entry.getValue();
...

String qs = "";
if (params == null)
    return qs;
int i = 0;
for (String param : params.keySet()) {
    qs += param + "=" + URLEncoder.encode(params.get(param), "UTF-8")
            + (i++ < (params.size() - 1) ? "&" : "");
return qs;