Java Utililty Methods String Encode

=&=&...

StringBuffer sb = new StringBuffer();
for (Iterator<Map.Entry<String, String>> it = parameters.entrySet().iterator(); it.hasNext();) {
    if (sb.length() > 0) {
        sb.append("&");
    Map.Entry<String, String> e = (Map.Entry<String, String>) it.next();
    sb.append(encodeParameter(e.getKey(), e.getValue()));
return sb.toString();

StringBuilder encodedParams = new StringBuilder();
try {
    for (Map.Entry<String, String> entry : params.entrySet()) {
        encodedParams.append(URLEncoder.encode(entry.getKey(), paramsEncoding));
        encodedParams.append('=');
        encodedParams.append(URLEncoder.encode(entry.getValue(), paramsEncoding));
        encodedParams.append('&');
    return encodedParams.delete(encodedParams.length() - 1, encodedParams.length()).toString();
} catch (UnsupportedEncodingException uee) {
    throw new RuntimeException("Encoding not supported: " + paramsEncoding, uee);

final String utf8_encoding = "UTF-8";
StringBuilder encodedURL = new StringBuilder();
boolean isFirst = true;
encodedURL.append("?");
Iterator<Entry<String, String>> iter = params.entrySet().iterator();
while (iter.hasNext()) {
    if (!isFirst) {
        encodedURL.append("&");
...

StringBuffer params = new StringBuffer();
Iterator nvp = nameValuePairs.keySet().iterator();
String name, value;
char ch;
while (nvp.hasNext()) {
    name = (String) nvp.next();
    value = (String) nameValuePairs.get(name);
    if (value == null)
...

List<String> encodedParams = Arrays.asList(params);
for (int i = 0; i < encodedParams.size(); ++i) {
    encodedParams.set(i, URLEncoder.encode(params[i], encoding));
return encodedParams;

if (path.startsWith("/")) {
    path = path.substring(1);
String[] pathElements = path.split("/");
StringBuffer sb = new StringBuffer();
for (String string : pathElements) {
    sb.append("/").append(URLEncoder.encode(string, "UTF-8"));
return sb.toString();

int i = path.indexOf('/');
StringBuilder sb = new StringBuilder();
while (i != -1) {
    sb.append(encode(path.substring(0, i))).append('/');
    path = path.substring(i + 1);
    i = path.indexOf('/');
sb.append(encode(path));
...

return Arrays.stream(str.split("/")).map(s -> encode(s)).collect(Collectors.joining("/"));

try {
    return URLEncoder.encode(value, UTF8)
            .replace("+", "%20").replace("*", "%2A").replace("%7E", "~");
} catch (UnsupportedEncodingException ex) {
    throw new AssertionError(ex); 

try {
    name = URLEncoder.encode(name, "UTF-8");
    name = name.replace("%", "XXX");
    name = name.replace(".", "YYY");
    name = name.replace("-", "ZZZ");
    return name;
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
...