According to the documentation at:

http://webwork.sfbay/j2se/1.4.2/docs/guide/intl/encoding.doc.html

"KOI8_R" encoding is supported by the NIO API. However, the following program shows that an UnsupportedEncodingException gets thrown when trying to obtain a Charset object for that encoding.

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import java.nio.charset.*;
import java.nio.*;

public class SimpleTest {

    public static void main(String[] args) {
        new SimpleTest();
    }

    public SimpleTest() {
        try {
            Charset decoder = Charset.forName("KOI8_R");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
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###@###.### 2003-03-20