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