hi all,
sorry, i'm a bit new to processing, so the answer might be a bit obvious, but i've been stuck for a  few days now.

i'm trying to set up a series of boxes that when touched with a mouse send indiviual signals to arduino.

the code works for a single box, but when i try to set up 4 using classes the error comes up saying 'the constructor Serial(controls_a.Button, String, int) is undefined

correct single code:
import processing.serial.*;

float buttonx;
float buttony;
int buttonSize = 20;
boolean mouseOverButton = false;

Serial port;

void setup()  {
size(200, 200);
buttonx = width/2.0;
buttony = height/2.0;
rectMode(RADIUS);


println(Serial.list());

port = new Serial(this, Serial.list()[1], 9600);

}

void draw()
{
background(0);

// Test if the cursor is over the box
if (mouseX > buttonx-buttonSize && mouseX < buttonx+buttonSize &&
mouseY > buttony-buttonSize && mouseY < buttony+buttonSize) {
mouseOverButton = true;  
// draw a line around the box and change its color:
stroke(255);
fill(153);

port.write(1);      
}
else {

stroke(153);
fill(153);

port.write('L');      
mouseOverButton = false;
}

rect(buttonx, buttony, buttonSize, buttonSize);
}

code using classes:
class Button
{

float buttonx;
float buttony;
float signal;
int buttonSize = 20; //radius of rectangle
boolean mouseOverButton = false;

Button (float posBx, float posBy, float sign) {
buttonx = posBx;
buttony = posBy;
signal = sign;

import processing.serial.*;  
Serial myPort;
println(Serial.list());

myPort = new Serial(this, Serial.list()[1], 9600);
 // Open the port that the Arduino board is connected to (in this case #0)
// Make sure to open the port at the same speed Arduino is using (9600bps)
}

void draw()
{
 rectMode(RADIUS);
 
 // Test if the cursor is over the box
 if (mouseX > buttonx-buttonSize && mouseX < buttonx+buttonSize &&
     mouseY > buttony-buttonSize && mouseY < buttony+buttonSize) {
   mouseOverButton = true;  
  stroke(255);
  fill(153);
  myPort.write(signal);
     }
  else {
   mouseOverButton = false;
    myort.write('S');
   stroke(153);
   fill(153);
 }
 
 rect(buttonx, buttony, buttonSize, buttonSize);
}
}

Button [] Buttons = new Button [4];

void setup() {
 size (400,200);
 for (int i = 0; i < Buttons.length; i++) {
   Buttons[i] = new Button(50+(i*100), 100, i);
 }
}
void draw() {
 background(230);
 for (int i = 0; i < Buttons.length; i++) {
   Buttons[i].draw();
 }}

thanks for your help!
G