For this exercise, you need to implement two (2) classes, the Rectangle class and the RectangleTest class, asfollows:• Rectangle class:o Instance variables:▪ A variable named width that stores the width of the rectangle as a double.▪ A variable named length that stores the length of the rectangle as a double.o Default constructor:▪ Initializes all data fields to default values.o Overloaded constructor▪ Parameters: a width and a length.▪ Initializes all data fields to the given values passed by the parameters.o Method getWidth▪ Returns the width of the calling object.o Method getLength▪ Returns the length of the calling object.o Method setWidth▪ Parameter: A width▪ Re-sets the value of the object's width to the value passed by the parameter.o Method setLength▪ Parameter: A length▪ Re-sets the value of the object's length to the value passed by the parameter.o Method calculateArea▪ Returns the area of the object (does NOT print; it only performs a calculation andreturns the result).o Method calculatePerimeter▪ Returns the perimeter of the object (does NOT print; it only performs a calculation).o Method printDimensions▪ Prints out all the data related to the object (see output below for format).Note that the get methods, the calculate methods, and printDimensions will have no parameters.• RectangleTest class:o Perform the following actions in the main method:▪ Create an object named r1 of the Rectangle class using the default constructor.▪ Using the set methods, initialize r1 to have width 3.0 and length 5.2.▪ Use the printDimensions method to output all the data (width & length) related to r1.▪ Create another object named r2 of the Rectangle class with width 2.6 and length 5.4using the overloaded constructor.▪ Print out r2 (width & length) using the get methods.▪ Print out the area and the perimeter of r1 using the calculateArea andcalculatePerimeter methods.▪ Print out the area and the perimeter of r2 using the calculateArea andcalculatePerimeter methods.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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For this exercise, you need to implement two (2) classes, the Rectangle class and the RectangleTest class, as
follows:
• Rectangle class:
o Instance variables:
▪ A variable named width that stores the width of the rectangle as a double.
▪ A variable named length that stores the length of the rectangle as a double.
o Default constructor:
▪ Initializes all data fields to default values.
o Overloaded constructor
▪ Parameters: a width and a length.
▪ Initializes all data fields to the given values passed by the parameters.
o Method getWidth
▪ Returns the width of the calling object.
o Method getLength
▪ Returns the length of the calling object.
o Method setWidth
▪ Parameter: A width
▪ Re-sets the value of the object's width to the value passed by the parameter.
o Method setLength
▪ Parameter: A length
▪ Re-sets the value of the object's length to the value passed by the parameter.
o Method calculateArea
▪ Returns the area of the object (does NOT print; it only performs a calculation and
returns the result).
o Method calculatePerimeter
▪ Returns the perimeter of the object (does NOT print; it only performs a calculation).
o Method printDimensions
▪ Prints out all the data related to the object (see output below for format).
Note that the get methods, the calculate methods, and printDimensions will have no parameters.
• RectangleTest class:
o Perform the following actions in the main method:
▪ Create an object named r1 of the Rectangle class using the default constructor.
▪ Using the set methods, initialize r1 to have width 3.0 and length 5.2.
▪ Use the printDimensions method to output all the data (width & length) related to r1.
▪ Create another object named r2 of the Rectangle class with width 2.6 and length 5.4
using the overloaded constructor.
▪ Print out r2 (width & length) using the get methods.
▪ Print out the area and the perimeter of r1 using the calculateArea and
calculatePerimeter methods.
▪ Print out the area and the perimeter of r2 using the calculateArea and
calculatePerimeter methods.

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