CharBuffer charBuffer = CharBuffer.wrap(chars);
ByteBuffer byteBuffer = StandardCharsets.UTF_8.encode(charBuffer);
byte[] bytes = Arrays.copyOfRange(byteBuffer.array(), byteBuffer.position(), byteBuffer.limit());
CharBuffer charBuffer = CharBuffer.wrap(chars);
ByteBuffer byteBuffer = StandardCharsets.UTF_8.encode(charBuffer);
byte[] bytes = Arrays.copyOfRange(byteBuffer.array(), byteBuffer.position(), byteBuffer.limit());