public class UnicodeReader extends Reader
For optimum performance, it is recommended that you wrap all instances of
UnicodeReader with a java.io.BufferedReader.
This class is mostly ripped off from the workaround in the description of Java Bug 4508058.
| Constructor and Description |
|---|
UnicodeReader(File file)
This utility constructor is here because you will usually use a
UnicodeReader on files. |
UnicodeReader(File file,
String defaultEncoding)
This utility constructor is here because you will usually use a
UnicodeReader on files. |
UnicodeReader(InputStream in)
Creates a reader using the encoding specified by the BOM in the file;
if there is no recognized BOM, then a system default encoding is used.
|
UnicodeReader(InputStream in,
String defaultEncoding)
Creates a reader using the encoding specified by the BOM in the file;
if there is no recognized BOM, then
defaultEncoding is
used. |
UnicodeReader(String file)
This utility constructor is here because you will usually use a
UnicodeReader on files. |
| Modifier and Type | Method and Description |
|---|---|
void |
close()
Closes this reader.
|
String |
getEncoding()
Returns the encoding being used to read this input stream (i.e., the
encoding of the file).
|
protected void |
init(InputStream in,
String defaultEncoding)
Read-ahead four bytes and check for BOM marks.
|
int |
read(char[] cbuf,
int off,
int len)
Read characters into a portion of an array.
|
public UnicodeReader(String file) throws IOException, FileNotFoundException, SecurityException
UnicodeReader on files.Creates a reader using the encoding specified by the BOM in the file; if there is no recognized BOM, then a system default encoding is used.
file - The file from which you want to read.IOException - If an error occurs when checking for/reading the
BOM.FileNotFoundException - If the file does not exist, is a
directory, or cannot be opened for reading.SecurityException - If a security manager exists and its
checkRead method denies read access to the file.public UnicodeReader(File file) throws IOException, FileNotFoundException, SecurityException
UnicodeReader on files.Creates a reader using the encoding specified by the BOM in the file; if there is no recognized BOM, then a system default encoding is used.
file - The file from which you want to read.IOException - If an error occurs when checking for/reading the
BOM.FileNotFoundException - If the file does not exist, is a
directory, or cannot be opened for reading.SecurityException - If a security manager exists and its
checkRead method denies read access to the file.public UnicodeReader(File file, String defaultEncoding) throws IOException, FileNotFoundException, SecurityException
UnicodeReader on files.Creates a reader using the encoding specified by the BOM in the file; if there is no recognized BOM, then a specified default encoding is used.
file - The file from which you want to read.defaultEncoding - The encoding to use if no BOM is found. If
this value is null, a system default is used.IOException - If an error occurs when checking for/reading the
BOM.FileNotFoundException - If the file does not exist, is a
directory, or cannot be opened for reading.SecurityException - If a security manager exists and its
checkRead method denies read access to the file.public UnicodeReader(InputStream in) throws IOException
in - The input stream from which to read.IOException - If an error occurs when checking for/reading the
BOM.public UnicodeReader(InputStream in, String defaultEncoding) throws IOException
defaultEncoding is
used.in - The input stream from which to read.defaultEncoding - The encoding to use if no recognized BOM is
found. If this value is null, a system default
is used.IOException - If an error occurs when checking for/reading the
BOM.public void close()
throws IOException
close in interface Closeableclose in interface AutoCloseableclose in class ReaderIOExceptionpublic String getEncoding()
protected void init(InputStream in, String defaultEncoding) throws IOException
defaultEncoding - The encoding to use if no BOM was recognized. If
this value is null, then a system default is used.IOException - If an error occurs when trying to read a BOM.public int read(char[] cbuf,
int off,
int len)
throws IOException
read in class Readercbuf - The buffer into which to read.off - The offset at which to start storing characters.len - The maximum number of characters to read.-1 if the end
of the stream has been reached.IOExceptionCopyright © 2009-2013 jtstand.com. All Rights Reserved.