import processing.net.*; //get the net library
Client MyClient; //define a client
void setup(){
  size(300,300);
  MyClient = new Client(this, “127.0.0.1”, 5200);
}
void draw(){
  if(MyClient.available()>0){ //if data are available
    int x = MyClient.read(); //get the x-coordinate
    int y = MyClient.read(); //get the y-coordinate
    rect(x,y,5,5); //draw a rect at xy
    println(x+”, “+y); //print out coordinates
  }
}