JAVA JAVA JAVA Following the example of the Circle class in Section 9.2, design

Question

JAVA

JAVA

JAVA

Following the example of the Circle class in Section 9.2, design a class named Rectangle to represent a rectangle The class contains: Two double data fields named width and height that specify the width and height of the rectangle. The default values are 1 for both width and height. A no-arg constructor that creates a default rectangle A constructor that creates a rectangle with the specified width and height. A method named getArea() that returns the area of this rectangle. A method named getPerimeter() that returns the perimeter Draw the UML diagram for the class and then implement the class. Write a test program that creates two Rectangle objects-one with width 4 and height 40 and the other with width 3.5 and height 35.9. Display the width, height, area, and perimeter of each rectangle in this order. SAMPLE RUN: The area of a rectangle with width 4.0 and height 40.0 is 160.0 The perimeter of a rectangle is 88.0 The area of a rectangle with width 3.5 and height 35.9 is 125.64999999999999 The perimeter of a rectangle is 78.8 Class Name: Exercise09_01 If you get a logical or runtime error, please refer https:/liveexample.pearsoncmg.com/faq.html.

Explanation / Answer

public class Rectangle { private double width, height; public Rectangle() { this.width = 1; this.height = 1; } public Rectangle(double width, double height) { this.width = width; this.height = height; } public double getWidth() { return width; } public void setWidth(double width) { this.width = width; } public double getHeight() { return height; } public void setHeight(double height) { this.height = height; } public double getArea() { return width * height; } public double getPerimeter() { return 2 * (width + height); } } public class Exercise09_01 { public static void main(String[] args) { Rectangle rectangle1 = new Rectangle(4, 40); Rectangle rectangle2 = new Rectangle(3.5, 35.9); System.out.println("The area of a rectangle with width " + rectangle1.getWidth() + " and height " + rectangle1.getHeight() + " is " + rectangle1.getArea()); System.out.println("The perimeter of a rectangle is " + rectangle1.getPerimeter()); System.out.println("The area of a rectangle with width " + rectangle2.getWidth() + " and height " + rectangle2.getHeight() + " is " + rectangle2.getArea()); System.out.println("The perimeter of a rectangle is " + rectangle2.getPerimeter()); } }

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