Prompt the user for length and breadth. Create a Rectangle object based on user input. Display the length, breadth, perimeter, and area using dialog boxes.

The `RectangleFactory` and `CircleFactory` classes implement this interface and provide concrete implementations of the `createShape` method to create `Rectangle` and `Circle` objects respectively. In ...

I'm learning Java by writing a Mandelbrot program. I can draw the image, then use the mouse to choose an area to magnify. Works great, except... When I choose the area to magnify (mouse down, move ...