import processing.serial.*;
Serial port;
void setup() {
  size(500,300);
  port = new Serial(this , Serial.list()[0], 9600);
}

void draw() {
   text("X Y mouse",250,50);
   if (port.available() > 0) {
    port.write(str(mouseX)+' '+str(mouseY));
   }
}

int x = 0;
void setup() {
  Serial.begin(9600);
}

void loop() {
  if (Serial.available() > 0) {
    x = Serial.read();
    //Serial.print("I received: ");
    Serial.println(x);
  }
}