import java.nio.ByteBuffer;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;

class Test {
	public static void main(String[] args) throws CharacterCodingException {
		ByteBuffer buffer = ByteBuffer.allocate(8);
		buffer.putInt(0x80);
		buffer.putInt(0x81);
		buffer.position(0);
		Charset charset = Charset.forName("IBM1098");
		CharsetDecoder decoder = charset.newDecoder();
		decoder.decode(buffer);
	}
}