The self-explanatory program below should not throw an exception

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

class Reset {

    public static void main(String[] args) throws Exception {
	if (! (encode(true).equals(encode(false))))
	    throw new Exception("Mismatch!");
    }

    static String encode(boolean reuseEncoder) {
	String s = "\u3042\u3043\u3044";

	CharsetEncoder e = Charset.forName("ISO-2022-JP").newEncoder();

	if (reuseEncoder) {
	    // I'm turning japanese. Yes I'm turning japanese.  Yes I think so!
	    e.encode(CharBuffer.wrap(s), ByteBuffer.allocate(64), true);

	    // Should put encoder back into ASCII mode
	    e.reset();
	}

	ByteBuffer bb = ByteBuffer.allocate(64);
	e.encode(CharBuffer.wrap(s), bb, true);
	e.flush(bb);
	bb.flip();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < bb.limit(); i++)
	    sb.append(String.format("%02x ", bb.get(i)));
	System.out.println(sb);
	return sb.toString();
    }
}
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###@###.### 2005-2-08 03:13:25 GMT