error arrayindexoutofboundexception: 0

// import the processing serial library
import processing.serial.*;
// and declare an object for our serial port
Serial port;
 
void setup() {
 // Get the name of the first serial port
 // where we assume the Arduino is connected
 String portName = Serial.list()[0];
 // initialize our serial object with this port
 // and the baud rate of 9600
 port = new Serial(this, portName, 9600);
}
 
void draw() { 
 int value1 = 123;
 int value2 = 17;
 
 // load up all the values into a byte array
 // then send the full byte array out over serial
 // NOTE: This only works for values from 0-255 
 byte out[] = new byte[2];
 out[0] = byte(value1);
 out[1] = byte(value2);
 port.write(out);
}