Define a class rectangle with two methods display and area

define a class rectangle with two methods display and area The class has attributes length and width, each of which defaults to 1. 0. The x, y, width, and height properties of the Rectangle class are independent of each other; changing the value of one property has no effect on the others. Calculate Area and Perimeter of Square and Rectangle. (Assume that the rectangle sides are parallel to x-or y-axes. A data field radius with a get method. e. println("Length-" + length + "Breadth-" + breadth+ "Color" + color); } public static void main(String args[]){ Rectangle obj1 = new Rectangle(2,4); Rectangle obj2 = new Rectangle(2,4,"Green"); obj1. This makes all the attributes of Polygon class available to the Triangle class. If the area and colour both are the same for the objects then display Matching Rectangles, otherwise display Non -matching Rectangle. y); // Get min X & Y double minX = getMin (getP1 (). Every class in Python defines its own behavior for built-in functions and methods. 7) By using the * (Geometry: the Circle2D class) Define the Circle2D class that contains: * * * * Two double data fields named x and y that specify the center of the circle * * with getter methods. We should define a method to calculate the area of the rectangle and call it from the main method. RectangleArea. It has a default method getSides() and an abstract method getArea(). Draw the UML diagram for the class and then implement the class. This class adds a few new methods that manipulate the position, and adds one additional abstract method that returns the bounding box of the shape (the smallest Rectangle in which the shape can be enclosed; note, this class has the full name java. 24a). halogen. sameArea returns 1 if the two Rectangles have the same area, and returns 0 if they don't. Implement this interface in all the classes. 5; double width = 8. Notice the statement, obj. It contains a data attribute (instance variable) radius and a method get_area(). 9 to the second object. Apply formula to calculate rectangle perimeter i. The methods and variables that constitute a class are called members of the class. 5, * * 4. println (rect. getArea()); System. * â- A constructor that creates a rectangle with the specified x, y, width, and * * height. Rectangle and Square can have angles, but a Circle has no angle. White a test Java program that creates two objects – one with width 4 and height 40 and the other with width 3. This is called overloading of constructor. Define one method area in the abstract class and override this area in these three subclasses to calculate for specific object i. Rectangle Class Definition. set and get methods d. A no-arg constructor that creates a default reactangle with (0,0) for (x,y) and 1 for both height and width. The actual storage representation of the coordinates is left to the subclass. * (Assume that the rectangle sides are parallel to x- or y- axes. The Person class has name and age data and display method to display the name and age of a person. A class method does not need to be invoked on an object but, instead, can be invoked on the name of the class. Write("Please write the length of your rectangle: "); length = Convert. This program calculates the area of a rectangle and displays it. 5 and height 35. Define another subclass sub2 in which define a method f2() to calculate and print the area and perimeter of a rectangle by using the required parameters accepted in main class. Three constructors as shown. 14 def perimeter( self): return 2* self. This lines tells us that Rectangle class extends the Shape class or Rectangle class is a child class of Shape class. java A class derived from the abstract class must implement all those methods that are declared as abstract in the parent class. public class Rectangle { private double width; private double height; public Rectangle(double width, double height) { this. This class defines two variables x and y and a method: move, which does not return a value. Area of a cylinder. A diagonal's length is the square root of (a squared + b squared) : Diagonal "d" = √(a 2 + b 2 ) Area should return the area, not set the result field. out. 2f}". 2f" %Area) print(" Perimeter of Rectangle is: %. Draw the UML diagram for the class and then implement the class. println("Area of rectangle : " + shape. 8) 1. A method named getPerimeter() that returns the perimeter. A constructor with two arguments that sets the values of both instance variables to those passed as parameters c. If class Rectangle is derived from class Quadrilateral, then a Rectangle object is a more specific version of a Quadrilateral object. print(" Area of a Rectangle is: %. I have used CodeBlocks compiler for debugging purpose. Demonstrate the class in a complete program. e. Objective : The objective of this assignment is to learn concept of classes, objects In this challenge, you are required to compute the area of a rectangle using classes. A method named getPerimeter( ) that returns the perimeter of this rectangle. A no-arg constructor that creates a default To find the area of a rectangle, multiply the length by the width. 5, 4. A no-arg constructor that creates a default reactangle with (0,0) for (x,y) and 1 for both height and width. breadth; } //method to calculate area of rectangle int area() { return (length*breadth); } } Similarly, there are two types of method members, instance methods and class methods. Both provide their own implementation of the area() method. This will not be a In the above PHP script, we have an abstract Shape class. 2, design a class named Rectangle to represent a rectangle. "); } Logic: Take two variables. Java program to calculate or to print area of a circle in a simple method. In Second Class we Test our graphic which is Test Class we make a Frame and put MyPanel with p=new MyPanel() object in it. A constructor that creates a rectangle with the (Geometry: The Circle2D class) Define the Circle2D class that contains: Two double data fields named x and y that specify the center of the circle with get methods. Following is a simple syntax to define a basic class in Scala. e. WriteLine("The area of rectangle : {0}", area); Console. * * * * Draw the UML diagram for the class and then implement the class. Make use of interface to define templates of methods to be there in the derive classes. out. In our example, Rectangle is considered as a friend class by Square but Rectangle does not consider Square to be a friend, so Rectangle can access the private members of Square but not the other way around. Add to the base class, a member functions get_data to initialize the data members in the base class and add another member function display_area to compute the area. These classes are derived from a base class Person. getArea()); // assign subclass reference to subclass variable Triangle tri = new Triangle(); // shape points to the object rect. The Rectangle class declares two static variables to define the version and revision level of this class. 5. Staff and Faculty classes are derived from Employee class. 4) The speed() method accepts an int parameter called maxSpeed - we will use this in 8). Create class rectangle and derive a class square from class Rectangle. You should reduce your interface to the lowest common denominator. A data fields width and height with getter and setter methods. The no-arg constructor initializes the width and length to 1. A Python Class is an Abstract Data Type (ADT). Now, every instance of Rectangle you create from this class will share these same variables. Online C++ programs and examples with solutions, explanation and output for computer science and information technology students pursuing BE, BTech, MCA, MTech, MCS, MSc, BCA, BSc. a. These classes are derived from a base class Person. Here, we have created two classes Rectangle and Square that implement Polygon. // abstract base class #include <iostream> using namespace std; class Polygon { protected: int width, height; public: void set_values (int a, int b) { width=a; height=b; } virtual int area (void) =0; }; class Rectangle: public Polygon { public: int area (void) { return (width * height); } }; class Triangle: public Polygon { public: int area (void) { return (width * height / 2); } }; int main { Rectangle rect; Triangle trgl; Polygon * ppoly1 = &rect; Polygon * ppoly2 = &trgl; ppoly1->set The derived classes, Circle and Rectangle, inherit the Name property from the base class, Shape. Test the classes by selecting ten random objects of the derived classes, and then invoking the show() method for each. Any operation (e. 9. 0 and less than 20. The length, width and area are of double type and colour is of string type . The parameter radius in Circle is an in parameter of type float. out. width = width; this. 0 A Rectangle has 4 sides. This was the first part of the description of OOP in PHP. out. A data fields width and height with getter and setter methods. . width = width; this. A derived class is also called a subclass. (Geometry: The Circle2D class) Define the Circle2D class that contains: Two double data fields named x and y that specify the center of the circle with get methods. B2. Implement the Rectangle class first. perimeter = 2 * (width + height); } @Override public double getArea() { return this. area() and perimeter() and also separate get() and set() functions for length and width. Assignment on Rectangle. 2. Create a class called Time having data member hh, mm,ss. Consider the following class hierarchy consisting of a Shape class which is inherited by three classes Rectangle, Circle, and Triangle. Write a program to accept details of a square, circle and When the Java platform encounters the following code, it knows to call the constructor in the Rectangle class that requires a Point argument followed by two integer arguments: Rectangle rectOne = new Rectangle(originOne, 100, 200); This call initializes the rectangle's origin variable to the Point object referred to by originOne. y, getP2 (). Define a class named Rectangle. println ("Area of the rectangle is " + area + " and the perimeter is " + perimeter + " centimeters. Inside the Main class, we have created two objects: led and halogen of the Lamp class. perimeter = 2 * (length + width). Create two object of Rectangle and compare their area and colour. format (perimeter)) Write a java program to create a class Rectangle having two member variables length and breadth. Q:2) Create a class account(accno,cust_name). Input length and width of rectangle from user. Derive two classes from account as saving_acc(balance, min The mathematical formula to calculate the area of a rectangle is: Area = Length * Width # Python Program to find Area of a Rectangle using length and width length = float(input('Please Enter the Length of a Triangle: ')) width = float(input('Please Enter the Width of a Triangle: ')) # calculate the area area = length * width print("The Area of a Rectangle using", length, "and", width, " = ", area) Area of Rectangle = 145. abstract class A { abstract void callme(); // concrete methods are still allowed in abstract classes void callmetoo() { System. e. two private instance variable X which specifies the X coordinate and Y which specifies the Y coordinate b. out. com * @description: Calculation with no user interaction */ class AreaOfRectangle2 { public static void main (String[] args) { double length = 4. A method named getArea() that returns the area of this rectangle. To use this class, you need to create another class that extends this this class and provides the implementation of abstract public Answer Attachment Preview: /** * Rectangle */ public class double double Class Rectangle { width; height; /** * no-arg constructor */ public Rectangle () { width = 1; height = 1; } /** * argument constructor */ public Rectangle (double w, double h) { this. Implement this method to add class handling for this event. dll shapes. C++. * - A method contains(Circle2D circle) that returns true if the specified * circle is inside this circle (see Figure 10. awt. We don't need to define them again (code reusability). out. Below is a diagrammatic representation of rectangle. * - A method getArea() that returns the area of the circle. l = int(input("Enter rectangle's length: ")) b = int(input("Enter rectangle's breadth: ")) rect_area = l * b. width = w self. turnOff() - It sets the isOn variable to false and Method invocation may be of any order. The Person class has name and age data and display method to display the name and age of a person. Create another class circle. Shape should have two methods area () -> Float and perimeter () -> Float that both return 0. Notice they're also defined as final because you want them to be constants. setRadius() : A setter method (also known as mutator method) for radius field 2. println("Area of Rectangle: "+rect. 5. If you wanted to facilitate printing a Point object, you could simply define a toString method: A factory method is a method that returns the instance of the class. Multiply both of them. A data fields width and height with getter and setter methods. where A is the area, L is the length, W is the width, and X means multiply Java - Create abstract class Shape, concrete Rectangle Class and Circle Class. A parameterized constructor creates a rectangle with the specified x,y,height and width. 1. Set the length and width of the first rectangle to 5 and 2. It has four sides and four equal angles of 90 degree each. - Define the method 'area' which takes 2 parameters 'Length' and 'Breadth' and find the area of the rectangle and Print as "Area of Rectangle is 144". Implement the class. A data field radius with a get method. class Name{ //statement }; int main(){ //create obj; } Example: How to find the area of a circle using class and object in C++. For instance, every shape can have a DisplayArea method since every shape has an area. area = width * height; this. The set methods should verify that length and width are each floating-point numbers larger than 0 A method named getPerimeter() that returns the perimeter. out. areaOf(5. Create an interface with only one method called area(). 9. The attributes and method names of Rectangle are hidden. 2. Draw the UML diagram for the class then implement the class. Assignment on Rectangle. blue) method. Check whether the two Rectangles have the same area and print a message indicating the result. Provide methods that calculate the perimeter and the area of the rectangle. When you pass an instance of some class to a built-in function or use an operator on the instance, it is actually equivalent to calling a special method with relevant arguments. A toString method and an abstract method getName(). Print the area and perimeter of the circle There we declare two classes, one class is MyPanel and other Class is Test. 0. width, rect. out. create a Shape base class and derive from it Circle, Square and Rectangle. 7f)); System. * * A no-arg constructor that creates a default circle with (0, 0) for (x, y) * * and 1 for radius. Write a test program that creates two Rectangle objects—one with width 4 and height 40 and the other with width 3. We then used the objects to call the methods of the class. When the rectangle is drawn, the pen is centered on the rectangle's boundary. Same for Rectangle and Circle Here is a simple example of a class with an abstract method, followed by a class which implements that method: // A Simple demonstration of abstract. Implement messages area and perimeter for the rectangle class using the formulae given below. Apply formula to calculate rectangle area i. Rectange and IS NOT the Rectangle class that we will define; read its Javadoc in the standard public class Rectangle{ int length; int breadth; String color; //constructor 1 Rectangle( int l , int b){ length = l; breadth = b; color = "Green"; } //constructor 2 Rectangle(int l, int b, String c){ length = l; breadth = b; color = c; } void display(){ System. led. A data field radius with a get method. Write a program in Java with class Rectangle with the data fields width, length, area and colour. Create another class circle. A no-arg constructor that creates a default reactangle with (0,0) for (x,y) and 1 for both height and width. areaOf(20. , calculating the perimeter or the area) that can be performed on a Quadrilateral object can also be performed on a Rectangle object. 2, design a class named Rectangle to represent a rectangle. Define the MyRectangle class that contains: Two double data fields named x and y that specify the center of the circle with getter and setter methods. . Display the width, length, area, and perimeter of each rectangle in this order. x- q. radius *3. 5) In order to use the Main class and its methods, we need to create an object of the Main Class. C++ Class Definitions. That window has dimensions, and if you ran the CH_05/example_02. 14*s1*s1; } } class rhombus extends square { double s2; rhombus(double a,double b) { super(a); s2=b; } double area() { The class has attributes length and width, each of which defaults to 1. We always make sure to write the java program in a simple way to the users and newbies can able to understand the program better. The Shape class is created to save on common attributes and methods shared by the three classes Rectangle, Circle, and Triangle. Example: Program to find area of Square, Rectangle and Circle using Method Overloading class JavaExample { void calculateArea(float x) { System. 2f ", Area); System. 0 and less than 20 The getArea () method returns the area and getPerimeter () returns the perimeter of the rectangle. println("the area of square is: " + getArea());}}-----class Rectangle implements Shape {public double getArea() {double getArea; double length = 0; double width = 0; getArea = length * width; return getArea;} public void xDisplay() {System. But you can use any C programming language compiler as per your availability. Object and Class Example: main within the class. Define other two classes Staff and Faculty. Complete the implementation of the rectangle class which takes three arguments no-sides (number of sides), breadth and length to create a rectangle object. 0f, 10. First, create a base class called Shape, and derived classes such as Rectangle, Circle, and Triangle. area; } @Override public double getPerimeter() { return this. Python Class Method. , it is the sub-class of Rectangle class. The following Java program to print the area of a circle has been written in five simple different ways, static method, using constructor, Define the Rectangle class that contains: Two double fields x and y that specify the center of the rectangle, the data field width and height, A no-arg constructor that creates the default rectangle with (0,0) for (x,y) and 1 for both width and height. Add to the base class a member function get_data () to initialize base class data members and another member function display_area () to compute and display the area of figures. Sample Solution: Python Code: class Rectangle(): def __init__(self, l, w): self. perimeter ()) Copy. The set methods should verify that length and width are each floating-point numbers larger than 0. It has methods that calculate the perimeter and the area of the rectangle. Define a class 'rectangle' with two methods 'display' and 'area'. Implement the toString() method for each class. Class variables are called, fields of the class and methods are called class methods. display(); obj2. {rect_area}. class Name{ //statement }; int main(){ //create obj; } Example: How to find the area of a rectangle using class and object in C++. Write main function to create two rectangle objects. Basic Class. A no-arg constructor that creates a default A method named getArea() that returns the area of this rectangle. 3. getRadius(): A setter method ( also known as accessor method for radis) Other Methods of Circle Class. 5 and height 35. All the four angles of the rectangle are right angles. on Java : Create a class called point which will have 2 co-ordinate value x & y and will be able to calculate the distance between two points. Write main function to create two rectangle objects. Class methods are common to an entire class. Define the MyRectangle class that contains: Two double data fields named x and y that specify the center of the circle with getter and setter methods. Display the properties of both objects and find their areas and perimeters. Console. Write A C++ Program To Overload Member Function Of A Class. Also, define the class PolyLine with Shape as its base class. y) and displacement along X axis, dx = L/ (2*sqrt (1+m*m)) Similarly, dy = m*L/ (2*sqrt (1+m*m)) Now we can simply find the co-ordinates of 4 corners by simply adding and subtracting the displacements obtained accordingly. The data and functions within a class are called members of the class. System. println ("Insert a: "); double a = sc. Remember the two values given as input will be treated as lengths of two sides in the case of rectangles and as base and height in the case of triangles, and used as follows: 8. Write a program to accept details of a square, circle and rectangle and display the area. 10. Each Rectangle object should have the following public methods: Rectangle(x, y, width, height) Constructs a new rectangle whose top-left corner is specified by the given coordinates and with the given width and height. Java program to calculate the area of Triangle C++ Program to Calculate Area of Rectangle Introduction. These variables and functions belong to the class Rectangle since these are declared inside the class and thus are called members of the class System. You can define variables and methods inside a class definition, but we will get back to that later. The method area() of class Circle returns a value of type double. breadth : to store breadth of the rectangle in decimal. A constructor with two arguments that sets the values of both instance variables to those passed as parameters c. In rectangle all four sides are not of equal length like square, sides opposite to each other have equal length. A no-arg constructor that creates a default The area of the rectangle is 30 I have 4 sides. x, getP2 (). 9. print(f"The area of rectangle is. A constructor that creates a rectangle with the Area of the rectangle: A = S * T. Getters and Setters for Circle class: 1. length, rect. The formula is: A = L x W. Coming to the program in this tutorial we are calculating Area of Triangle, Rectangle, Square and Circle. length + ", " + rect. 2f ", Perimeter); } public double RectangleArea( double width, double height ) { Area = width * height; return Area; } } d) Display salary Set B Q:1) Create class rectangle and derive a class square from class Rectangle. The perimeter of this shape is: 6. h> #include<conio. getArea ());}} Assignment on Rectangle. Rectange and IS NOT the Rectangle class that we will define; read its Javadoc in the standard When run, the Solution class produces the following output:. def circle(pi,radius): area_circle = pi * (radius ** 2) print " the area of your circle equals %s" % (area_circle) def rectangle(length, width): area = length * width print "The area of your rectangle equals %s" %(area) def triangle(height, base): area_triangle = height * base * 0. out. class Circle: (Line 8): define the Circle class. Otherwise, it will create a old-style class. Write a program to display area of square and rectangle. Define the MyRectangle class that contains: Two double data fields named x and y that specify the center of the circle with getter and setter methods. out. Create a method called as area which returns the area of the class and a method called as perimeter which returns the perimeter of the class. Same for Rectangle and Circle. Create a class Rectangle. The definition of classes in Logtalk require the use of meta-classes. System. println("area of Rectangle -->"+area);}} class Circle extends Shape {double r=5; void area() void show() to display the length and width of the rectangle int sameArea(Rectangle) that has one parameter of type Rectangle. float area () to calculate and return the area of the rectangle. 5. Create an abstract class called Shape, which contains abstract methods to for area (), perimeter (), colour () and compareShape (Shape ob). Area = nr^2h where: n is Math. In this program, You will learn how to find the area of a rectangle using class and object in C++. C++ Program to find area of triangle, recangle and circle using constructor overloading. Inside the Rectangle class, we declared two variables and three functions. 3f, 28. h> class shape { protected: double b; double h; public: shape(double b1, double h1) { b=b1; h=h1; } virtual void disp_area()=0; }; class triangle : public shape { public: triangle(double b1, double h1):shape(b1,h1) { } void disp_area(); }; class rectangle: public shape { public: rectangle(double b1, double h1):shape(b1,h1) { } void disp_area(); }; void triangle::disp_area() { double a1; a1=(b*h)*1/2; cout<< " THE AREA OF TRIANGLE IS Definition. Create another class circle. height = h; } /** * Calculates and returns the area */ public double getArea () { return this. Area of Rectangle in PHP. 2f, 0)); }} Display salary. An instance of the class “Rectangle” is created as “obj” and the method is invoked to display the result. it was the wrong way. out. Previous: Write a Python program to reverse a string word by word. Implement this interface in all the classes. length*self. In this example, if you create the instance of Rectangle class, draw() method of Rectangle class will be invoked. out. The class contains: 1 Two double data fields named width and height that specify the width and height of the rectangle. And the method Area and Perimeter to calculate the Area and Perimeter of Rectangle. set and get methods d. The class meta-class holds the constructor method, allowing the class to accept a message for creating a new instance. Methods which combine such a Rectangle with a point or rectangle will ignore the Rectangle entirely in generating the result. Write A C++ Program By Using Member Functions Outside The Body Of Class To Find Area Of Rectangle. Draw the UML diagram for the class. In order to avoid infinite regression, we use here the usual trick of making a class an instance of itself. height = h def area(self): return self. class rectangle: def display(self): display("This is a Rectangle") def area(self, Length, Breadth): area = 0. Logic: Take two variables. The class should have display() method, to print the width and height of the rectangle separated by space. Write program in c++ a class with two methods to accept and display a value from the key board using the object initialised. The ways to find out the perimeter of a rectangle as per the blog are as follows: Using Scanner Class; Using Command Line Arguments; Using Static Function; As we all know, a rectangle is a two-dimensional quadrilateral figure in the field of geometry. ReadKey(); The Rectangle2D class describes a rectangle defined by a location (x,y) and dimension (w x h). #include<iostream. * (Geometry: the MyRectangle2D class) Define the MyRectangle2D class that" * "contains:" * " Two double data fields named x and y that specify the center of the rec- tangle with getter and setter methods. Previously In the Java program to find the area of Rectangle, we have written logic to find the area of the rectangle inside the main method. The rectangle class is a subclass of polygon class. Display each rectangle and its area and perimeter. py application long enough, you saw the Rectangle move off the screen. Write A C++ Program For Class Rectangle. width + ", " + area(rect. nextDouble (); System. Area of a rectangle. It has set and get methods for both length and width. height, rect. 21a). class Rectangle(object): def __init__(self, w, h): self. It has methods that calculate the perimeter and the area of the rectangle. class Rectangle { int length; int breadth; //constructor to initialize length and breadth of rectangle Rectangle(int l, int b) { length=l; breadth=b; } //copy constructor Rectangle(Rectangle obj) { System. A base class is also called a superclass. Write an Application program that will add the data of two objects and store the answer in third object and display . calculateArea() is one such method shared by all three child classes and present in Shape class. Note 2: Abstract class cannot be instantiated which means you cannot create the object of it. Perimeter of rectangle is = 60. ToInt32(Console. out. * - A method getPerimeter() that returns the perimeter of the circle. Write a program using a function called area() to compute area of the following: (a) Area of circle = (22/7) * r * r (b) Area of square= side * side (c) Area of rectangle = length * breadth Display the menu to display the area as per the user's choice. This class contains four members: two data members of type int (member width and member height) with private access (because private is the default access level) and two member functions with public access: the functions set_values and area, of which for now we have only included their #include <iostream> using namespace std; class Shape { protected: double width, height; public: void set_data (double a, double b) { width = a; height = b; } virtual double area() = 0; }; class Rectangle: public Shape { public: double area () { return (width * height); } }; class Triangle: public Shape { public: double area () { return (width * height)/2; } }; int main () { Shape *sPtr; Rectangle Rect; sPtr = &Rect; sPtr -> set_data (5,3); cout << "Area of Rectangle is " << sPtr -> area package Area; public class AreaOfaRectangle { double Area, Perimeter; public void AreaofRectangle( double width, double height ) { Area = width * height; Perimeter = 2 * (width + height); System. Create a class named 'Rectangle' with two data members 'length' and 'breadth' and two methods to print the area and perimeter of the rectangle respect ankitajawati Answers The solution to this problem is available as the answer to problem 7 of practice section (Java). /** * @author: BeginnersBook. 2f}". Write A C++ Program For Public Fields And Member Functions. out. The attributes of Circle are radius and center. Derive two specific classes called triangle and rectangle from the base shape. class Room { public: double length; double breadth; double height; double calculateArea(){ return length * breadth; } double calculateVolume(){ return length * breadth * height; } }; Here, we defined a class named Room. nextDouble (); double perimeter = 2 * (a + b); double area = a * b; System. Create two classes named Rectangle and Circle which implements the interface Shape. ") elif name == "square": s = int(input("Enter square's side length: ")) sqt_area = s * s. We will learn about the factory method later. height= height; this. In this example, we have created a Student class which has two data members id and name. Both diagonals of rectangle have equal length def area(length: Double, width: Double) = length * width def length(width: Double, area: Double) = if (width > 0) area / width else 0 def width(length: Double, area: Double) = if (length > 0) area / length else 0 def show(rect: Rectangle) = println(rect. We declared Rectangle as a friend of Square so that Rectangle member functions could have access to the private member, Square::side. In class MyPanel we use drawRect( ) & fillRect( ) mathods to draw rectangle and fill Color in it. x, getP4 (). The diagonals in a rectangle also are of the same length. The method names of Circle are area(), circum(), setCenter() and setRadius(). setValues(78, 5); //Display the area of rectangle System. Define one method area() in the abstract class and override this area() in these three subclasses to calculate for specific object i. 6) Then, go to the main() method, which you know by now is a built-in Java method that runs your program (any code inside main is executed). The body is a docstring that explains what the class is for. width = w; this. out. We are calling the method of the abstract class using the object obj. Here is a class that represents a rectangle, it will have the following member variables and methods: height; width; Rectangle - constructor to create a new rectangle with the given height and width; getArea - returns the area of the rectangle; getHeight - returns the area of the rectangle; getWidth - returns the area of the rectangle Class is a user defined data type, which holds its own data members and member functions, which can be accessed and used by creating instance of that class. Implement the class. If the area and colour both are the same for the objects then display “Matching Rectangles”, otherwise display “Non-matching Rectangle” In this program, You will learn how to find the area of a circle using class and object in C++. If two Rectangle objects are combined and each has a negative dimension, the result will have at least one negative dimension. void show () to display the length and width of the rectangle. Include appropriate data members and constructors in all classes. 24c). A no-arg constructor that creates a default Calculate area of rectangle using default constructor in java Default constructor is a constructor created by compiler if user does not create a constructor in a class. Set the length and width of the second rectangle to 5 and 18. area of Triangle subclass should calculate area of triangle etc. Member functions/methods: Rectangle(double l, double b): parameterized constructor to initialize length=l, breadth=b. """ The header indicates that the new class is called Point. Create two objects of Rectangle and compare their area and colour. height; } /** * Calculates and returns the perimeter */ public double getPerimeter () { return 2 * (this Assignment on Rectangle. out. lang package to calculate the square of any number. ReadLine()); area = length * width; Console. out. A Point object should not know how to "print" itself. The Rectangle class should have two data fields-width and height of int types. This is an entity class. In the main method of FindRectangleArea, we have created one reference and one object of Rectangle class. 2f" %Perimeter) Python Program to find Area of a Rectangle using functions. display(); } } 1. format(" The Perimeter of Rectangle = %. 2. Like variables defined in a class are called attributes, functions defined in a class are called methods. The methods are set_ length , set_width (), set_ colour(), and find_ area (). width * self. width newRectangle = Rectangle(12, 10) print(newRectangle. format(" The Area of Rectangle = %. Multiply both of them. Contribute your code and comments through Disqus. A data field radius with a get method. println("copy constructor invoked"); length=obj. println(); They're represented by a rectangle that includes rows of the class name, its attributes, and its operations. In this program, easy to understand for Java Interface concept. 2f" %Area) print(" Perimeter of Rectangle is: %. println("Area of the circle: "+area+" sq units"); } public static void main(String args[]){ JavaExample obj = new JavaExample 7. area ()) print( NewCircle. To find the area of a rectangle, multiply the length by the width. Set the length and width of the first rectangle to 5 and 2. 2. "); } } class B extends A { class Circle(): def __init__( self, r): self. out. 0. y - p. in); double Same follows for methods also. Write A C++ Program To Illustrate The Concept That The Member Function Defined Outside The Class. Add to the base a member function getdata () to initialize base class data member and another member function display_area () to compute and display the area of figures. By running Test Class we see a Rectangle and a Blue Color Filled Rectangle. Python Program to Calculate Area of Rectangle - In this article, we've created some programs in Python to find and print area of rectangle based on its length and base entered by user. getArea()); System. File 3. length; breadth=obj. File: TestAbstraction1. But before we begin getting any deeper, let’s take a quick look at classes and objects. println("Area of the square: "+x*x+" sq units"); } void calculateArea(float x, float y) { System. y, getP4 (). Write a test program that create two Rectangle objects - one with width 4 and height 40, and the other with width 3. Create class rectangle and derive a class square from class Rectangle. A data field radius with a get method. 'class' is a keyword which means that 'Rectangle' is a class. void setwidth (float) to set the width data member. A rectangle with four sides of equal length is a square. out. ; The variables inside class definition are called as data members and the functions are called member functions. Because the three methods are to be overloaded, they should each have the same name, but different parameter lists. x); double minY A rectangle has two diagonals, they are equal in length and intersect in the middle. * * A data field radius with a getter method. rectangle_area()) Sample Output: 120 A rectangle is a flat figure in a plane. 23 Describe abstract class called Shape which has three subclasses say Triangle,Rectangle, and Circle. The area of the square is 25 I can get sides of a polygon. com (Geometry: The Circle2D class) Define the Circle2D class that contains: Two double data fields named x and y that specify the center of the circle with get methods. setHeight(7); area Using these three classes, design a program that will accept dimensions of a triangle or a rectangle interactively, and display the area. float perimeter () to calculate and return the perimeter of the rectangle. Class name: Rectangle Data members/instance variables: length : to store length of the rectangle in decimal. e. When you draw a class in a class diagram, you're only required to fill out the top row—the others are optional if you'd like to provide more detail. width * this. 6. 3. Name: The first row in a class shape. radius = radius; } public override double Area { get { // Given the radius, return the A class is used to specify the form of an object and it combines data representation and methods for manipulating that data into one neat package. 4 (Rectangle Class) Create a class Rectangle. Display the area and perimeter of a rectangle by appropriate methods. area = length * width. Derive two specific classes called triangle and rectangle from the base shape. A Triangle has 3 sides. If you were new to java or at the beginning stage then, Check – 500+ simple Java programs for beginners. This class is only the abstract superclass for all objects that store a 2D rectangle. create the same classes from the first exercise, but this time make Shape a protocol If slope of AD = m, then m = (p. Think of it like a blueprint. Example The following class called Shape stores the width and height of a two-dimensional object, such as a square, rectangle, triangle, and so on. cs public class Square : Shape { private int side; public Square(int side, string id) : base(id) { this. A toString method and an abstract method getName(). Write An Abstract Class Shape With Two Abstract Methods Calculate Area( And CalculatePerimeter() To Calculate Area And Perimeter, Respectively. Sample Output: The inputSides() method takes in the magnitude of each side and dispSides() displays these side lengths. out. shape See full list on stackoverflow. The other problem with the base class is the use of two different methods. A method named getPerimeter() that returns the perimeter. Include appropriate data members and constructors in all classes. contains(new (Geometry: The Circle2D class) Define the Circle2D class that contains: Two double data fields named x and y that specify the center of the circle with get methods. , a type) called Rectangle and an object (i. Describe abstract class called Shape which has three subclasses say Triangle, Rectangle, Circle. print("Area of Square is {}". x, getP2 (). Rectangle rect = new Rectangle(); Square square = new Square(); Circle circle = new Circle(); System. Include appropriate data members and constructors in all classes. 4. NOTES: In Python 2, you need to write "class Circle(object):" to create a so-called new-style class by inheriting from the default superclass object. Write the definitions for each of the above member functions. 9. Inside the class body, we define two functions – these are our object’s methods. Derive two classes from account as saving_acc(balance,min_account) and current_acc(balance Define two different classes namely, Student and Employee. format(side)) if __name__ == '__main__': Once the class has been defined, we take inputs from the user as a and b where a is the length of the rectangle and b is the breadth of the rectangle. Rectangle r = new Rectangle(10, 4); Square s = new Square(7); Circle c = new Circle(3. Declare this member function as virtual. * * â- A method contains(double x, double y) that returns true if the specified * * point (x, y) is inside this rectangle (see Figure 10. Enter the length of Rectangle: 10 Enter the width of Rectangle: 20 Area of Rectangle is:200. Now you should have two class files in your project. It has methods that calculate theperimeter and the area of the rectangle. display(); Here, obj is the object of the child class Main. height = height; } public double getArea() { return width * height; } public double getCircumference() { return 2*width+2*height; } @Override public String toString() { return "Rectangle["+width+","+height+"]Area:"+getArea()+",Circumference:"+getCircumference(); } public static void main(String[] args) { Scanner console=new Scanner(System. e. double area(): to calculate area of the rectangle [area of a rectangle is length × breadth]. Write a test program that creates two Rectangle objects. Getter and setter for all the instance variables. radius **2*3. Next: Write a Python class named Rectangle constructed by a length and width and a method which will compute the area of a rectangle. Create an object for the class. out. ) Rectangle rectangle2 = new Rectangle(3. In the above example, we have created an interface named Polygon. Write a test * * program that creates a MyRectangle2D object r1 (new MyRectangle2D(2, 2, 5. 1. println ("Insert b: "); double b = sc. 14 NewCircle = Circle (8) print( NewCircle. Write appropriate constructor and method of the class. turnOn() - It sets the isOn variable to true and prints the output. We have created the Main class that inherits the abstract class. Store it in some variable say length and width. A rectangle is a 2d shape which has four sides and four vertices. println("Area of the rectangle: "+x*y+" sq units"); } void calculateArea(double r) { double area = 3. A no-arg constructor that creates a default reactangle with (0,0) for (x,y) and 1 for both height and width. I am trying to create a class rectangle. Create an interface with only one method called area(). radius = r def area( self): return self. Write A C++ Program To Implement Class Rectangle. Class Definition This class adds a few new methods that manipulate the position, and adds one additional abstract method that returns the bounding box of the shape (the smallest Rectangle in which the shape can be enclosed; note, this class has the full name java. out. So, we can create a class called Triangle which inherits from Polygon. 9 Display the height, width, area, and perimeter of each rectangle in this order. 21b). Define other two classes Staff and Faculty. SHARE Python Program to Find the Area of a Rectangle Using Classes void setlength (float) to set the length data member. create an abstract class Shape that has a. print("Area of Rectanngle is {}". class Rectangle - We have defined our own class named 'Rectangle'. length = l self. h> #include<process. e. The length, width and area are of double type and colour is of string type. Therefore, the ‘angles’ variable should be packaged only in Square and Rectangle class and not in parent class Shape or in Circle class. In your test class main method, creates two Rectangle objects—one with width 4 and length 40 and the other with width 3. The RectangleArea class is derived from Rectangle class, i. x, getP4 (). Three constructors as shown. Staff and Faculty classes are derived from Employee class. A constructor that creates a rectangle with the specified width and height. The class contains: 1 Two double data fields named width and height that specify the width and height of the rectangle. class rectangle extends square { double s2; rectangle(double a,double b) { super(a); s2=b; } double area() { return s1*s2; } } class triangle extends square { double s2; triangle(double a,double b) { super(a); s2=b; } double area() { return s1*s2/2; } } class circle extends square { circle(double a) { super(a); } double area() { return 3. println("Circle Area : " + c. Display the width, heigth, area, and perimeter of each rectangle in this order. Notice the code in line 25. x); double maxY = getMax (getP1 (). format(area)) class sqaure(): def display(self): display("This is a Square") def area(self, side): area = side * side. Add two derived Class Triangle and Rectangle from the base Class Shape. The second argument passed to the Pen constructor indicates that the pen width is 5 pixels. Polymorphism brings flexibility and scalability to the OOP systems. That's far beyond its level of abstraction. We are creating the object of the Student class by new keyword and printing the object's value. Below is the implementation . 0. * * â- A method getArea() that returns the area of the rectangle. A constructor that creates a rectangle with the are get_length(), get_width(), get_colour() and find_area(). Provide set and get methods for both length and width. Computer Science Q&A Library (The Rectangle class) Following the example of the Circle class in Section 8. We set the color by setColor(Color. A method named getArea () that returns the area of this rectangle. If we place abstract keyword before a method, we cannot define body of the method. println("Area of Triangle is: " + area); – Output displayed here. Create a class hierarchy in which each specific shape class derives from a common base class. Assign color red to all Rectangle objects. Write a test program that create two Rectangle objects - one with width 4 and height 40, and the other with width 3. The variables length, breadth, and height declared inside the class are known as data members. **/ @Override public double getPerimeter {return width * 2 + height * 2;} /** returns the area of the rectangle **/ @Override public double getArea {return width * height;} public boolean contains (double x, double y) {// Get max X & Y double maxX = getMax (getP1 (). - Define the method 'display' such that it will Print the message "This is a Rectangle" upon calling. # Python Program to find Area of a Rectangle width = float(input('Please Enter the Width of a Rectangle: ')) height = float(input('Please Enter the Height of a Rectangle: ')) # calculate the area Area = width * height # calculate the Perimeter Perimeter = 2 * (width + height) print(" Area of a Rectangle is: %. width)) Area of rectangle is = 200. side = side; } public override double Area { get { // Given the side, return the area of a square: return side * side; } } } public class Circle : Shape { private int radius; public Circle(int radius, string id) : base(id) { this. The Internals of Operations Like len() and []. All the objects of a class can access the variables and can call the methods defined inside the The following example draws a rectangle with its upper-left corner at (10, 10). Saturday, 26 April 2014 Ex 7: Write a program in Java with class Rectangle with the data fields width, length, area and colour. 0f)); System. out. Implement this interface in all the classes. g. Objects are instances of a class. Attributes: The second row in a class shape. public class Rectangle extends Shape { private final double width, height, area, perimeter; public Rectangle(double width, double height) { this. See full list on programiz. Approach : First, we will create a class called Rectangle in which we will define the variable length and breadth. This method should be present in the parent class. 5 * Length * Breadth. ReadLine()); Console. areaOf(10. The class has attributes length and width, each of which defaults to 1. contains(3, 3), r1. 0 and less than 20. Test your implementation using the following The class Rectangle accessed its attribute length and defined a new attribute breadth outside its class definition. setWidth(5); Rect. Here A represents the breadth and B represents length of the rectangle. displayDate - this A class definition looks like this: class Point: """Represents a point in 2-D space. 0 A Square has 4 sides. Flash on A Python method is a label that you can call on an object; it is a piece of code to execute on that object. com Use this class to store two double type values that could be used to compute the area of figures. Area Of Rectangle Formula The area of a rectangle is written as, A=l*b where, A=Area l=length b=breadth Area Of Rectangle Example Program 2. Then Define The Two Subclasses "Circle"and "Rectangle"that Inherit From Shape, And Add Their Respective Member Variables In The Subclasses To Complete The Implementation Of The Abstract Method. Let's consider several other examples of polymorphism. getArea(): calculates and returns area of circle In keeping with the "separation of concerns" argument presented above, I would not have a print method as part of my Point class. x)/ (q. Derive two specific classes called triangle and rectangle from the base shape. area() of Triangle subclass should calculate area of triangle etc. Area = Width x Length. a. Thus the Rectangle class inherits attributes and methods defined in the Shape class. Area of Rectangle in PHP. println("This is a concrete method. A data fields width and height with getter and setter methods. PI, r is the radius of the cylinder's base, and h is the cylinder's height. Area of the rectangle in Java using method. Then we will create another class in which we will create a main method. Following image represents the area of a rectangle. Java comes with two methods to draw right-angled rectangles. y, getP3 (). create an abstract class Shape that has a. A constructor that creates a rectangle with the * rectangle overlaps with this rectangle (see Figure 10. When you define a class, you define a blueprint for a data type. Here, S is the length of the rectangle and T is the breadth/width of the rectangle. println("the area of rectangle is: " + getArea());}} #include <iostream> using namespace std; class Rectangle // Class Rectangle { public: Rectangle(float L, float W); // Constructor float getLength(){return length;} void setLength(float L); float getWidth(){return width;} void setWidth(float W); double perimeter(void){return (length*2 + width*2);} // Perimeter function double area(void) {return (length*width);} // Area funcion private: float L, W, length, width; }; // End of class Rectangle Rectangle::Rectangle(float L, float W) // Scope The Rectangle class contains: Two instance variables width (double) and length (double). 5 and height 35. Implement the methods and add the necessary properties on Circle, Square and Rectangle. This class morphs into two descendant classes: Rectangle and Square. Supporting methods in Graphics class void drawRect(int x, int y, int width, int height): Draws an outline rectangle with the left-top coordinates of x and y and with the width and height specified. 9. This Python area of rectangle program allows the user to enter the width and height of a rectangle. You can represent a line as two points, a circle as a center and a radius, and a rectangle as two points on diagonally opposite corners. Create a class and using a constructor initialise values of that class. Write a program to accept details of a square, circle and rectangle and display the area. 5); System. shape = rect; // Set data in Rectangle's object shape. format (area)) print ("Perimeter : {0:. Draw the UML diagram for the class then implement the class. println("Rectangle Area : " + r. getArea()); System. Following print statements will help us to print the Perimeter and Area of a rectangle. 5 print "the area of your triangle equals %s" % (area_triangle) def square(length): area_square = length ** 2 print "the area of your square equals %s" % (area_square) shapes = ["square", "rectangle", "triangle When it is complete, the program will ask the user to enter the width and length of a rectangle and then display the rectangle’s area. // compile with: csc -target:library -reference:abstractshape. The opposite sides of a rectangle are equal and parallel in nature. Create two objects of Rectangle and compare their area and colour. m_area (33, 9, 297) Declares a class (i. height m_area = property(area) We can use the class as below: >>> rect = Rectangle (33, 9) >>> rect. 9. To find the Area of a rectangle the formula is: Length x Breadth Create a class to print the area of a square and a rectangle. B1. It should have data members length and width of type float (which should default to 1). Lengthy codes are way better too, but those extra couple of code lines are actually not necessary. The set methods should verify that length and width are each floating-point numbers larger than 0. 5 and height 35. As method area() to calculate the area of cube invoked before invoking method area() to calculate the area of the cylinder. println("Area of Circle: "+circle. A triangle is a polygon with 3 sides. awt. A Rectangle object is an area defined by its position, as indicated by its top-left corner point(x, y) and by its width and its height. Computing the area of a circle doesn't make sense to have a length and width overload, but you are dictating that your classes have that. 0 abstract class Shape {abstract void area(); double area;} class Triangle extends Shape {double b=50,h=15; void area() {area = (b*h)/2; System. Using the object, call both the methods. This doesn't actually define any data, but it does define what the class name means, that is, what an object of the class will consist of and what operations can be performed on such an object. A no-arg constructor that creates a default Create a class Rectangle. 0 3. Add to the base class a member method getData( ) to initialize base class data members and another member method displayArea( ) to compute and display the area of figures. Define the MyRectangle2D class that contains: Two double data fields named x and y that specify the center of the rectangle with getter and setter methods. Write A C++ Program To Define Inner Class ; Write a C++ program for Height class. Methods getArea() and getPerimeter(). * * â- A method getPerimeter() that returns the perimeter of the rectangle. The method for printing area of rectangle has two parameters which are length and breadth respetively while the other method for printing area of square has one parameter which is side of square. two private instance variable X which specifies the X coordinate and Y which specifies the Y coordinate b. The class should have member functions that calc. The rectangle has a width of 100 and a height of 50. A Rectangle object stores an (x, y) coordinate of its top/left corner, a width, and a height. Assign width 4 and height 40 to the first object and width 3. We start the class definition with the class keyword, followed by the class name and a colon. A method named getPerimeter() that returns the perimeter. Here, we are creating a main() method inside the class. Write a program to calculate the area of a rectangle with the #include <iostream> #include <string> using namespace std; class rectangle { private: double width; double height; string color; public: rectangle(double w, double h) { width = 0; height = 0; } rectangle(string color, double w, double h) { height = h; width= w; color = "white"; } double set_width(double w) { width = w; } double set_height(double h) { height = h; } double get_area() { return width * height; } double get_perimeter() { return 2 * (width + height); } void compare(rectangle r1 */ public class AbstractDemo { public static void main(String[] args) { Shape shape; // assign subclass reference to subclass variable Rectangle rect = new Rectangle(); // shape points to the object rect. Write("Please write the width of your rectangle: "); width = Convert. width = w def rectangle_area(self): return self. Area of rectangle is the region covered by the rectangle in a two-dimensional plane. 9)), displays its area and perimeter, and displays the result of * * r1. So we need to inherit the abstract class and define the abstract methods in the new class. Write A C++ Program To Make A Call Class Constructor Or Not During Class Array Declaration. The Rectangle class As a first example, we will define a Rectangle object. 5 and length 35. Write a program to take an input a grade and display Grade Points Average GPA 8. We would list any parent classes in between round brackets before the colon, but this class doesn’t have any, so we can leave them out. Override the toString() method inherited, to return "A Circle with radius=xxx, which is a subclass of yyy ", where yyy is the output of the toString() method from the superclass. perimeter; } } All objects get memory in Heap memory area. It contains a variable: isOn and two methods: turnOn() and turnOff(). class Rectangle {private int length; private int breadth; public Rectangle (int l, int b) {length = l; breadth = b;} public int getArea {return length * breadth;}} class Test {public static void main (String [] args) {Rectangle rect = new Rectangle (2, 4); System. 5 and height 35. Find Area of Rectangle without Function, Find Area of Rectangle using User-defined Function, Using Class and Object The class contains: Two data field named width and height. The program calls the following functions, which have not been written: • getLength – This function should ask the user to enter the rectangle’s length and then return that value as a double. The area is calculated by multiplying the length by the width. Program to calculate area of rectangle with length as 14 and width as 12 is shown. The class name works as a class constructor which can take a number of parameters. print(f"The area of square is. If you still have any doubts, feel free to drop another question. The class has two methods with the same name but different number of parameters. All the sides of rectangle are not equal only the opposite sides of a rectangle are equal. The class has attributes length and width, each of which defaults to 1. Create an interface with only one method called area(). In the program, we have also called one static method pow() of Math class which is a member of the java. out. The area of the rectangle is the length multiplied by the width. Program to calculate area of rectangle with length as 14 and width as 12 is shown. The default values are 1 and 2 for the height, respectively. Use a virtual method to invoke the appropriate method on any derived class through a single call to the base class method. The methods are set_ length (), set_width (), set_ colour (), and find_ area (). In addition to that, the Rectangle class adds two private attributes, getter and setter methods for private attributes, as well as methods to calculate area and perimeter of the rectangle. 0; double area = length*width; System. The perimeter of this shape is: 10. , a variable) of this class, called rect. Computer Science Q&A Library (The Rectangle class) Following the example of the Circle class in Section 8. println("Are of square: "+square. HOME; Java; Inheritance; Abstract Classes and Methods #include <iostream> using namespace std; // Base class Shape class Shape { public: void setWidth(int w) { width = w; } void setHeight(int h) { height = h; } protected: int width; int height; }; // Base class PaintCost class PaintCost { public: int getCost(int area) { return area * 70; } }; // Derived class class Rectangle: public Shape, public PaintCost { public: int getArea() { return (width * height); } }; int main(void) { Rectangle Rect; int area; Rect. The details like breadth, length, area and perimeter are also printed. Write a test program that creates two Rectangle objects—one with width 4 and height 40 and the other with width 3. Create two classes: Rectangle. Python Methods Inside Class. out. x, getP3 (). 5 and height 35. Now let’s see calculate area of rectangle using default constructor in java. It has set and get methods for both length and width. Namespace: Defines the parent-child relationship between two visuals. C++ Program to Calculate Area of Rectangle. Hi there. The Rectangle class contains: Two instance variables width (double) and length (double). * - A method contains(double x, double y) that returns true if the * specified point (x, y) is inside this circle (see Figure 10. To calculate the area and perimeter of a square and rectangle in Java Programming, you have to ask to the user to enter length and breadth of the rectangle and side length of the square and make two variable, one for area and one for perimeter for each to perform the mathematical calculation and display the result on the output screen. Define two different classes namely, Student and Employee. println("Square Area : " + s. Define a subclass sub1 in which define a method f1() to calculate and print hcf (highest common factor) by division method of any two given numbers entered by user in the main class. Below is the implementation of the above approach: (Geometry: The Circle2D class) Define the Circle2D class that contains: Two double data fields named x and y that specify the center of the circle with get methods. The definition of the Rectangle class includes attributes for the x and y origin of the Rectangle, which helps draw it in the window. out. Display the width, heigth, area, and perimeter of each rectangle in this order. println("area of Triangle -->"+area);}} class Rectangle extends Shape {double w=70,h=20; void area() {area = w*h; System. # 1 width = float (input ("Enter the width : ")) height = float (input ("Enter the height : ")) # 2 area = width * height perimeter = 2 * (width + height) # 3 print ("Area : {0:. The set methods should verify that length and width are each floating-point numbers greater than or equal to 0. The length, width and area are of double type and colour is of string type. 2f" %Perimeter) Write a java program to create an interface named Shape, which defines two methods public float area and public float perimeter. getArea - this function should accept the rectangle's length, width as arguments, and return the rectangle's area. 2); A class can have multiple constructors, compiler differentiate on the basis of parameter passed. Defining a class named Point creates a Methods of the Circle Class. 14*r*r; System. An instance method must be invoked on an object. Write A C++ Program To Implement Class Rectangle. 9. It has set and get methods for both length and width. x, getP3 (). ToInt32(Console. )" The class contains a regular method display(). println("Area of Rectangle is:"+area); } } Output: Area of Rectangle is:36. Create a class account(account,cust_name). Each attribute of the class is displayed on a separate line. Define the MyRectangle class that contains: Two double data fields named x and y that specify the center of the circle with getter and setter methods. define a class rectangle with two methods display and area


Define a class rectangle with two methods display and area