Java Utililty Methods Text File Read by Charset

List of utility methods to do Text File Read by Charset

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Description

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

Method

ReadernewReader(InputStream input, Charset encoding)
Creates a java.io.Reader from an input stream 
if (encoding != null) {
    return new InputStreamReader(input, encoding);
} else {
    return new InputStreamReader(input);
BufferedReadernewReader(ReadableByteChannel ch, Charset cs)
new Reader 
if (ch == null)
    return null;
return new BufferedReader(Channels.newReader(ch, cs.newDecoder(), -1));
BufferedReadernewUTF8CharSetReader(String filename)
new UTF Char Set Reader 
return new BufferedReader(new InputStreamReader(new FileInputStream(filename), Charset.forName("UTF-8")));
ReaderopenNewCompressedInputReader(final InputStream inputStream, final Charset charset)
open New Compressed Input Reader 
final ZipInputStream zipInputStream = new ZipInputStream(inputStream);
zipInputStream.getNextEntry();
return new InputStreamReader(zipInputStream, charset);
Stringread(File file, Charset charset)
read 
FileLock lock = null;
FileChannel fileChannel = null;
try {
    fileChannel = FileChannel.open(file.toPath(), StandardOpenOption.READ, StandardOpenOption.WRITE);
    lock = fileChannel.lock();
    ByteBuffer buffer = ByteBuffer.allocate((int) fileChannel.size());
    fileChannel.read(buffer);
    return new String(buffer.array(), charset);
...
Stringread(InputStream _is, CharsetDecoder _decoder)
read 
StringBuilder sb = new StringBuilder();
read(new InputStreamReader(_is, _decoder), sb);
return sb.toString();
Stringread(InputStream in, Charset charset)
Reads contents of the input stream fully and returns it as String. 
if (in == null)
    throw new IllegalArgumentException("input stream cannot be null");
InputStreamReader reader = new InputStreamReader(in, charset);
char[] buffer = new char[1024];
StringBuilder sb = new StringBuilder();
for (int x = reader.read(buffer); x != -1; x = reader.read(buffer)) {
    sb.append(buffer, 0, x);
return sb.toString();
voidread(InputStream in, Charset cs, Appendable appendable, int capacity)
Read the specified text input stream and fill the content to the specified appendable. 
InputStreamReader isr = new InputStreamReader(in, cs == null ? Charset.defaultCharset() : cs);
CharBuffer cbuf = CharBuffer.allocate(capacity);
int r = 0;
while (r > -1) {
    cbuf.clear();
    appendable.append(cbuf, 0, r);
    r = isr.read(cbuf);
isr.close();
Stringread(InputStream in, String charsetName)
read 
try (InputStreamReader inputReader = charsetName == null ? new InputStreamReader(in)
        : new InputStreamReader(in, charsetName)) {
    try (BufferedReader br = new BufferedReader(inputReader)) {
        StringBuffer sb = null;
        String s = br.readLine();
        while (s != null) {
            if (sb == null) {
                sb = new StringBuffer();
...
StringreadAll(InputStream in, Charset charset)
read All 
StringWriter output = new StringWriter();
byte[] buffer = new byte[4096];
int n;
while (-1 != (n = in.read(buffer))) {
    output.write(new String(buffer, 0, n, charset));
return output.toString();