Cannot resolve rect.x, rect.y, rect.height, rect.width

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Java

below code is given for me to test. it shows error that it cannot resolve rect.x, rect.y, rect.width, rect.height. how to solve it?



static Rectangle2D rotateRect (RectangularShape rect, int angle, Point2D pivot = null )
{



if (pivot == null)
{
pivot = new Point2D.Double(rect.x + (int) Math.round(rect.width / 2d), rect.y + (int) Math.round(rect.height / 2d));
}

double rad = angle * Math.PI / 180;
double diffX = rect.x - pivot.x;
double diffY = rect.y - pivot.y;
int x = (int) Math.round(rect.x - diffX + (diffX * Math.cos(rad)) + (diffY * Math.sin(rad)));
int y = (int) Math.round(rect.y - diffY + (diffY * Math.cos(rad)) - (diffX * Math.sin(rad)));

return new Rectangle2D.Double(x, y, rect.width, rect.height);
}

What I have tried:

I tried tried to declare x and y but even it shows error