Creating array of square buttons

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  Squares [] button = new Squares [8];

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    void setup () {

      size (400,400);

      smooth ();

      stroke (305,300,100);

      for (int i=0; i<button.length; i++) {

        button[i] = new Squares (200,200,random (10,70));

      }

  }

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  void draw () {

    background (0);

   for (int i=0; i<button.length; i++) {

     button[i].checkCollisions ();

     button[i].drawSquares ();

     button[i].update ();

   }

  }

  void mousePressed () {

    for (int i=0; i<button.length; i++) {

      button[i].checkMousePress ();

    }

  }

  class Squares {

    float x;

    float y;

    float xspeed;

    float yspeed;

    float buttonSize;

    boolean clicked;

    Squares (float xpos, float ypos, float bSize) {

      x = xpos;

      y = ypos;

      buttonSize = bSize;

      xspeed = random (-5,5);

      yspeed = random (-5,5);

      clicked = false;

    }

    void update () {

      x += xspeed;

      y += yspeed;

    }

    void checkCollisions () {

      if ( (x<0) || (x>width-buttonSize)) {

         xspeed = -xspeed;

      }

       if ( (y<0)  || (y>height-buttonSize)) {

         yspeed = -yspeed;

      } 

     }

     void drawSquares () {

       if (clicked) {

         fill (255,0,0);

       }

       else {

       fill (0,255,255);

       }

       rect (x,y,buttonSize,buttonSize);

     }

     void checkMousePress () {

       if ((mouseX > x) && (mouseX< x + buttonSize)) {

         clicked = !clicked;

       }

       else if ((mouseY > y) && (mouseY< y + buttonSize)) {

         clicked = !clicked;

       }

     }

  }

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