This is a simple Java class to represent a rectangle. The class includes features to initialize, modify, and display the rectangle's dimensions. A constructor to initialize the rectangle with ...

System.out.println("The area of the rectangle is " + area); System.out.println("The perimeter of the rectangle is " + perimeter); ...

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 ...