CS112 Assignment 2: Java Rectangle Class

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Questions and Answers

What is the purpose of the `Rectangle` class described in the text?

To create a graphical user interface for drawing rectangles
To represent a rectangle shape and provide methods to calculate its area and perimeter (correct)
To implement a sorting algorithm for arrays of rectangles
To store and manipulate data related to rectangular objects

What are the fields or properties of the `Rectangle` class?

length, width, and color
coordinates of the rectangle's corners
area and perimeter
length and width (correct)

What is the purpose of the constructor in the `Rectangle` class?

To calculate the area and perimeter of the rectangle
To draw the rectangle on a graphical user interface
To create a new instance of the `Rectangle` class and initialize its length and width fields (correct)
To set the color of the rectangle

What is the purpose of the getter methods in the `Rectangle` class?

To access the length and width of the rectangle (B) Signup and view all the answers

How would you use the `Rectangle` class to calculate the area and perimeter of a rectangle with dimensions 5.0 units (length) by 3.0 units (width)?

Create a new instance of the <code>Rectangle</code> class with length 5.0 and width 3.0, then call the area and perimeter methods (B) Signup and view all the answers