Fixed

//array named myBouncingArray for 100 BouncingButtons

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BouncingButton[] myBouncingArray = new BouncingButton[2];

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void setup () {

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  size (900, 600);

  smooth();

  ellipseMode(CORNER);

​

​

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

​

    myBouncingArray[i]= new BouncingButton(100, 100, random (100, 170), random (100, 170));

  }

}

​

void draw () {

  background (191);

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

    myBouncingArray[i].drawBouncingButton();

    myBouncingArray[i].collisionBouncingButton();

    myBouncingArray[i].movingBouncingButton();

  }

}

​

void mousePressed () {

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

​

    myBouncingArray[i].checkMousePress ();

  }

}

​

​

​

​

class BouncingButton {

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  float x;

  float y;

  float speedX;

  float speedY;

​

  float sizeX;

  float sizeY;

    boolean clicked;

​

​

​

  BouncingButton (float xPos, float yPos, float xSize, float ySize) {

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    x=xPos;

    y=yPos;

    sizeX=xSize;

    sizeY=ySize;

    color c;

​

    speedX= random (-2, 2);

    speedY= random (-2, 2);

  }

​

  //DONE

  void movingBouncingButton () {

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    x += speedX;

    y += speedY;

  }

  //DONE

  void collisionBouncingButton () {

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

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      speedX = -speedX;

    }

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

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      speedY = -speedY;

    }

  }

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  void drawBouncingButton () {

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    if (clicked) {

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      fill (0);

      rect (x, y, sizeX, sizeY);

    }

    else { 

      fill (255);

    }

    ellipse (x, y, sizeX, sizeY);

  }

​

  void checkMousePress() {

    if ((mouseX > x ) && (mouseX< x + sizeX)&& (mouseY > y) && (mouseY < y + sizeY)) {

​

      clicked = !clicked;

    }

  }

}

​

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​

​