public void setStartingPosition()
    {
        int randomCorner = (int) (Math.random() * 4);
        switch (randomCorner)
        {
            case 0: 
                this.x = 0;
                this.y = 0;
                break;
            case 1:
                this.x = 450;
                this.y = 0;
                break;
            case 2:
                this.x = 0;
                this.y = 350;
                break;
            case 3:
                this.x = 450;
                this.y = 350;
                break;
        }
    }