class ByteBufferByteChannel implements ByteChannel {
    ByteBuffer byteBuffer;

    public ByteBufferByteChannel(byte[] byteArray) {
        this(ByteBuffer.wrap(byteArray));
    }

    public ByteBufferByteChannel(ByteBuffer byteBuffer) {
        this.byteBuffer = byteBuffer;
    }

    public int read(ByteBuffer dst) throws IOException {<FILL_FUNCTION_BODY>}

    public boolean isOpen() {
        return true;
    }

    public void close() throws IOException {
    }

    public int write(ByteBuffer src) throws IOException {
        int r = src.remaining();
        byteBuffer.put(src);
        return r;
    }
}

        int rem = dst.remaining();
        if (byteBuffer.remaining() <= 0) {
            return -1;
        }
        dst.put((ByteBuffer) ((Buffer)byteBuffer.duplicate()).limit(byteBuffer.position() + dst.remaining()));
        ((Buffer)byteBuffer).position(byteBuffer.position() + rem);
        return rem;
    
<no_super_class>