File.encoding in windows influence by the locale

Question

How can I set the file.encoding in windows platform that will not be influence by the locale.
For example, in the Control Panel->Regional Options the locale is set to Russian
and what I get is that I use file.encoding Cp1251 even though I pass the parameter in the command line
-Dfile.encoding=Cp1252 (I want to keep Cp1251,
Cp1251 is US westen default and Cp1252 is Windows Cyrillic)
I run java program to see what encoding I use
D:\ProgramFiles\jdk1.3.1\bin\java -Dfile.encoding= Cp1252 TestEncodingThe locale in my pc is Russian and the result is:
System.getProperty("file.encoding") == Cp1252
Default ByteToChar Class == sun.io.ByteToCharCp1251
Default CharToByte Class == sun.io.CharToByteCp1251
Default CharacterEncoding == Cp1251
OutputStreamWriter encoding == Cp1251
InputStreamReader encoding == Cp1251
TestEncoding.java
import java.io.PrintStream;
import java.io.ByteArrayOutputStream;
import java.io.OutputStreamWriter;
import java.io.InputStream;
import java.io.ByteArrayInputStream;
import java.io.InputStreamReader;
class TestEncoding{
public static void main(String[] args) {
String encProperty = System.getProperty("file.encoding");
System.out.println("System.getProperty(\"file.encoding\") == " + encProperty);
String byteToCharClass = sun.io.ByteToCharConverter.getDefault().getClass().getName();
System.out.println("Default ByteToChar Class == " + byteToCharClass);
String charToByteClass = sun.io.CharToByteConverter.getDefault().getClass().getName();
System.out.println("Default CharToByte Class == " + charToByteClass);
String defaultCharset = sun.io.ByteToCharConverter.getDefault().getCharacterEncoding();
System.out.println("Default CharacterEncoding == " + defaultCharset);
ByteArrayOutputStream buf = new ByteArrayOutputStream(10);
OutputStreamWriter writer = new OutputStreamWriter(buf);
System.out.println("OutputStreamWriter encoding == " + writer.getEncoding());
byte[] byteArray = new byte[10];
InputStream inputStream = new ByteArrayInputStream(byteArray);
InputStreamReader reader = new InputStreamReader(inputStream);
System.out.println("InputStreamReader encoding == " + reader.getEncoding());

Answer 1

What are you really trying to accomplish? Applications should avoid relying on undocumented or implementation dependent features, such as the file.encoding property and sun.* classes (see http://java.sun.com/products/jdk/faq/faq-sun-packages.html).
On the other hand, there's plenty of documented public API that lets you work with specific character encodings. For example, you can specify the character encoding for conversion between byte arrays and String objects (see the String class specification) or when reading or writing files (see the InputStreamReader and OutputStreamWriter classes in java.io).
The default encoding is needed by the Java runtime when accessing the Windows file system, for example file names, so changing it would likely result in erroneous behavior.
Norbert Lindenberg