Java Utililty Methods URL Encode

try {
    StringBuffer sb = new StringBuffer();
    Enumeration e = prop.keys();
    while (e.hasMoreElements()) {
        String key = (String) e.nextElement();
        String value = prop.getProperty(key);
        String ekey = URLEncoder.encode(key, "utf-8");
        String evalue = URLEncoder.encode(value, "utf-8");
...

try {
    return URLEncoder.encode(_string, _sEncoding);
} catch (Exception ex) {
    throw new RuntimeException("failed to encode string into URL format using encoding " + _sEncoding, ex);

return String.format(Locale.UK,
        "https://translate.googleapis.com/translate_a/single?client=gtx&sl=%s&tl=%s&dt=t&q=%s", from, to,
        URLEncoder.encode(word));

try {
    return URLEncoder.encode(in, "UTF-8").replace("+", "%20").replace("*", "%2A").replace("%7E", "~");
} catch (Exception wontHappen) {
    return null;

try {
    return URLEncoder.encode(input, systemEncoding).replace("+", "%20"); 
} catch (UnsupportedEncodingException e) {
    throw new RuntimeException(e);

String encoded = input;
try {
    encoded = URLEncoder.encode(input, getCharset());
} catch (Exception ex) {
    ex.printStackTrace();
return encoded;

Encode the message by replacing all the white spaces with %20.

String encoded = null;
try {
    encoded = URLEncoder.encode(raw.replaceAll(" ", "%20"), "UTF-8");
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
return encoded;

String ret = s;
try {
    ret = URLEncoder.encode(s.trim(), "UTF-8");
} catch (Exception localException) {
return ret;

try {
    return (s != null) ? URLEncoder.encode(s, "UTF-8") : null;
} catch (UnsupportedEncodingException uee) {
    throw new RuntimeException("UTF-8 is unknown in this Java.");

final StringBuffer out = new StringBuffer(s.length());
final ByteArrayOutputStream buf = new ByteArrayOutputStream(32);
final OutputStreamWriter writer = new OutputStreamWriter(buf);
for (int i = 0; i < s.length(); i++) {
    int c = s.charAt(i);
    if (charactersDontNeedingEncoding.get(c)) {
        out.append((char) c);
    } else {
...