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Practical 20 - 010858

The document defines an abstract class 'Shape' with an abstract method 'area()' and three subclasses: 'Triangle', 'Rectangle', and 'Circle', each implementing the area calculation. The 'ShapeTest' class contains a main method that creates instances of each shape and prints their areas. This demonstrates polymorphism and method overriding in object-oriented programming.

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12 views2 pages

Practical 20 - 010858

The document defines an abstract class 'Shape' with an abstract method 'area()' and three subclasses: 'Triangle', 'Rectangle', and 'Circle', each implementing the area calculation. The 'ShapeTest' class contains a main method that creates instances of each shape and prints their areas. This demonstrates polymorphism and method overriding in object-oriented programming.

Uploaded by

ravieducation2024
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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abstract class Shape {

abstract double area();

class Triangle extends Shape {

private double base, height;

public Triangle(double base, double height) {

this.base = base;

this.height = height;

@Override

double area() {

return 0.5 * base * height;

class Rectangle extends Shape {

private double length, width;

public Rectangle(double length, double width) {

this.length = length;

this.width = width;

@Override

double area() {

return length * width;

class Circle extends Shape {


private double radius;

public Circle(double radius) {

this.radius = radius;

@Override

double area() {

return Math.PI * radius * radius;

public class ShapeTest {

public sta)c void main(String[] args) {

Shape triangle = new Triangle(20, 15);

Shape rectangle = new Rectangle(14, 26);

Shape circle = new Circle(7);

System.out.println("Area of Triangle: " + triangle.area());

System.out.println("Area of Rectangle: " + rectangle.area());

System.out.println("Area of Circle: " + circle.area());

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