Create a byte array where every value is followed by a 0x00

pad.java

//this is for https://github.com/dashaw92/500IQIdea
private static byte[] construct(String msg) {
  byte[] packet = new byte[(2 + msg.length()) * 2];
  packet[0] = 0x03;
  packet[2] = (byte)msg.length();
  for(int i = 0; i < msg.length(); i++) {
    packet[4 + (i * 2)] = (byte)msg.charAt(i);
  }
  return packet;
}