多线程环境中的Bytebuffer[duplicate]

class RequestMessage{

public byte[] getMsgAsBytes() throws UnsupportedEncodingException{
        ByteBuffer reqBuffer = ByteBuffer.allocate(PAYLOAD_SZ);
        reqBuffer.put(xxx);
        reqBuffer.putInt(xxx);
        reqBuffer.put(xxx);
        reqBuffer.position(0);
        return reqBuffer.array();
    }
}

(read-only) 。单例将被多个线程串联访问。

private void sendRequest(...) throws Exception {
        RequestMessage reqMessage = new RequestMessage( );
        gateway.sendAsyncMessage(...., reqMessage.getMsgAsBytes());

}

使用bytebuffer线程安全吗?
我们确实看到数组内容偶尔出现损坏,需要确定原因。