Java Reference
In-Depth Information
20.4. InputStreamReader and OutputStreamWriter
The conversion streams InputStreamReader and OutputStreamWriter TRans-
late between character and byte streams using either a specified char-
acter set encoding or the default encoding for the local system. These
classes are the "glue" that lets you use existing 8-bit character encodings
for local character sets in a consistent, platform-independent fashion. An
InputStreamReader object is given a byte input stream as its source and
produces the corresponding UTF -16 characters. An OutputStreamWriter ob-
ject is given a byte output stream as its destination and produces en-
coded byte forms of the UTF -16 characters written on it. For example,
the following code would read bytes encoded under ISO 8859-6 for Arabic
characters, translating them into the appropriate UTF -16 characters:
public Reader readArabic(String file) throws IOException {
InputStream fileIn = new FileInputStream(file);
return new InputStreamReader(fileIn, "iso-8859-6");
}
By default, these conversion streams will work in the platform's default
character set encoding, but other encodings can be specified. Encoding
values were discussed in " Character Set Encoding " on page 320 ; they
can be represented by name or a Charset , or by a CharsetDecoder or Char-
setEncoder object from the java.nio.charset package.
public InputStreamReader(InputStream in)
Creates an InputStreamReader to read from the given InputStream
using the default character set encoding.
public InputStreamReader(InputStream in, Charset c)
Creates an InputStreamReader to read from the given InputStream
using the given character set encoding.
 
Search WWH ::




Custom Search