Java Utililty Methods InputStream Read by Charset

List of utility methods to do InputStream Read by Charset

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Description

The list of methods to do InputStream Read by Charset are organized into topic(s).

Method

StringforceEncoding(String inputString, String targetCharset)
Converts a given string to use the given encoding, e.g. 
String returnString = "";
Charset charset = Charset.forName(targetCharset);
CharsetDecoder decoder = charset.newDecoder();
CharsetEncoder encoder = charset.newEncoder();
encoder.onUnmappableCharacter(CodingErrorAction.REPLACE);
encoder.replaceWith(" ".getBytes());
ByteBuffer bbuf = encoder.encode(CharBuffer.wrap(inputString));
CharBuffer cbuf = decoder.decode(bbuf);
...
StringfromUnicode(String charset, String input)
from Unicode 
StringBuffer ret = new StringBuffer();
Matcher matcher = UNICODE_PATTERN.matcher(input);
String error = null;
while (matcher.find()) {
    try {
        String uniValue = matcher.group().substring(2);
        String newValue = new String(new char[] { (char) Integer.parseInt(uniValue, 16) });
        if (charset != null) {
...
StringgetContentFromInputStream(InputStream in, String charset)

get string content form inputStream with given charset 

StringBuffer dist = new StringBuffer();
byte[] data = new byte[1024];
int readNum = -1;
try {
    while ((readNum = in.read(data)) != -1) {
        dist.append(new String(data, 0, readNum, charset));
    in.close();
...
longgetHeaderLen(FileInputStream in, Charset encoding)
get Header Len 
byte[] expectedHeader = getHeader(encoding);
byte[] magic = new byte[expectedHeader.length];
int read = readGuaranteed(magic, in);
if (read != expectedHeader.length) {
    return 0;
for (int i = 0; i < magic.length; i++) {
    if (magic[i] != expectedHeader[i]) {
...
CharsetgetInputCharset()
get Input Charset 
if (inputCharset == null)
    inputCharset = getDefaultCharset();
return inputCharset;
StringgetStreamAsString(InputStream source, Charset charset)
get Stream As String 
String result = getReaderAsString(new InputStreamReader(source, charset));
source.close();
return result;
StringgetText(InputStream stream, Charset charset)
Read an InputStream completely, using the specified encoding. 
BufferedReader br = null;
try {
    br = new BufferedReader(new InputStreamReader(stream, charset));
    StringWriter sw = new StringWriter();
    int n;
    char[] cbuf = new char[1024];
    while ((n = br.read(cbuf, 0, cbuf.length)) != -1)
        sw.write(cbuf, 0, n);
...
Stringinput2String(InputStream input, Charset encoding)
input String 
byte[] bytes = new byte[input.available()];
input.read(bytes);
return new String(bytes, encoding);
StringinputStreamAsString(InputStream stream, Charset cs)
input Stream As String 
BufferedReader br = new BufferedReader(new InputStreamReader(stream, cs));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = br.readLine()) != null) {
    sb.append(line).append("\n");
br.close();
return sb.toString();
...
StringinputStreamToString(final InputStream inputStream, final String charsetName)
Read from an java.io.InputStream to a java.lang.String . 
final Scanner scanner = new Scanner(inputStream, charsetName).useDelimiter("\\A");
String nextToken = "";
if (scanner.hasNext()) {
    nextToken = scanner.next();
return nextToken;