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Create an abstract class named shape that contains two integers and an empty method named printarea().Provide three classes named rectangle, triangle and circle such that each one of the classes extends the class Shape. Each of the inherited class from shape class should provide the implementation for the method printarea(). Get the input and calculate the area of rectangle, circle and triangle.In the Main class, create the objects for the three inherited classes and invoke the methods and display the  area values of the different shapes.2(length of rectangle)3(breadth)5(triangle breadth)6(Triangle height)4(circle radius)

Question

Create an abstract class named shape that contains two integers and an empty method named printarea().Provide three classes named rectangle, triangle and circle such that each one of the classes extends the class Shape. Each of the inherited class from shape class should provide the implementation for the method printarea(). Get the input and calculate the area of rectangle, circle and triangle.In the Main class, create the objects for the three inherited classes and invoke the methods and display the  area values of the different shapes.2(length of rectangle)3(breadth)5(triangle breadth)6(Triangle height)4(circle radius)

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Solution

Here is a Java solution for your problem:

abstract class Shape {
    int a;
    int b;

    abstract void printArea();
}

class Rectangle extends Shape {
    Rectangle(int a, int b) {
        this.a = a;
        this.b = b;
    }

    void printArea() {
        System.out.println("Area of Rectangle: " + (a * b));
    }
}

class Triangle extends Shape {
    Triangle(int a, int b) {
        this.a = a;
        this.b = b;
    }

    void printArea() {
        System.out.println("Area of Triangle: " + (0.5 * a * b));
    }
}

class Circle extends Shape {
    Circle(int a) {
        this.a = a;
    }

    void printArea() {
        System.out.println("Area of Circle: " + (3.14 * a * a));
    }
}

public class Main {
    public static void main(String[] args) {
        Rectangle rectangle = new Rectangle(2, 3);
        rectangle.printArea();

        Triangle triangle = new Triangle(5, 6);
        triangle.printArea();

        Circle circle = new Circle(4);
        circle.printArea();
    }
}

In this code, Shape is an abstract class with two integers a and b and an abstract method printArea(). Rectangle, Triangle, and Circle are classes that extend Shape and provide their own implementations of printArea(). In the main method, we create objects of Rectangle, Triangle, and Circle and call their printArea() methods to display the areas of the shapes.

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