Java Utililty Methods String Encode

String encode(final String s)
Encode a string for inclusion in a URI (according to RFC 2396).

final byte[] bytes = s.trim().getBytes("UTF-8");
final int count = bytes.length;
final String allowed = "=,+;.'-@&/$_()!~*:"; 
final char[] buf = new char[3 * count];
int j = 0;
for (int i = 0; i < count; i++) {
 if ((bytes[i] >= 0x61 && bytes[i] <= 0x7A) || 
 (bytes[i] >= 0x41 && bytes[i] <= 0x5A) || 
...

String encode(final String s)
encode

return encode(s, "UTF-8");

String encode(final String s, final String encoding)
Encodes thh given string using the provided encoding.

if ("utf-8".equalsIgnoreCase(encoding)) {
 return encodeUTF8(s);
return encodeBytes(s.getBytes(encoding));

String encode(final String source, final String encoding, BitSet notEncoded)
encode

byte[] bytes = encode(source.getBytes(encoding), notEncoded);
return new String(bytes, "US-ASCII");

String encode(String data, String encode)
encode

return encode(data, encode, null);

byte[] encode(String encoding, String string)
encode

if (encoding == null) {
 return string.getBytes();
} else {
 return string.getBytes(encoding);

byte[] encode(String encoding, String text)
Encodes a String from unicode to the specified encoding.

if (text != null) {
 if (encoding == null)
 return text.getBytes();
 try {
 return text.getBytes(encoding);
 } catch (UnsupportedEncodingException e) {
return null;

String encode(String name)
encode

StringBuilder sb = new StringBuilder();
for (int i = 0; i < name.length(); i++) {
 char c = name.charAt(i);
 if (c != '_' && Character.isLetterOrDigit(c))
 sb.append(c);
 else {
 String esc = String.format("_%02x", (int) c);
 sb.append(esc);
...

String encode(String s)
encode

boolean needToChange = false;
boolean wroteUnencodedChar = false;
int maxBytesPerChar = 10; 
StringBuffer out = new StringBuffer(s.length());
ByteArrayOutputStream buf = new ByteArrayOutputStream(maxBytesPerChar);
OutputStreamWriter writer;
try {
 writer = new OutputStreamWriter(buf, "UTF-8");
...

String encode(String s)
encode

try {
 return new String(encodeToChar(s.getBytes("UTF-8"), false));
} catch (UnsupportedEncodingException e) {
 System.err.println("Base64 encoding error: " + e.getMessage());
 e.printStackTrace();
return null;