Here's how to resolve the problem in complete code. In the Rectangle class, we have instance variables width and height. When we define a constructor with parameters of the same names (width and height), we use this.width = width and this.height = height to avoid confusion. This way, this.width and this.height refer to the instance variables, while width and height refer to the parameters.
Here's how to resolve the problem in complete code. In the Rectangle class, we have instance variables width and height. When we define a constructor with parameters of the same names (width and height), we use this.width = width and this.height = height to avoid confusion. This way, this.width and this.height refer to the instance variables, while width and height refer to the parameters.