Define Dart Class

Define Dart Class

In this tutorial, we will learn how to define a Dart class using the class keyword. The class keyword is followed by the user-defined class name, which is provided inside the curly braces. A Dart class can consist of fields, constructors, getters, setters, and methods.

Syntax

The general syntax of the Dart class is as follows:

class class_name {

<fields>

<getters/setters>

<constructor>

<methods>

}

 

 

Example

/*
Define a Dart class
Dart Tutorials – www.TestingDocs.com
*/

void main() {
var book =new Book();
book.title=”The Old man and the Sea”;
book.author=”Ernest Hemingway”;
book.pages=98;
book.price=90;
//Accessing class Function
book.displayBookInfo();

}

//Define a class Book

class Book {
var title;
var author;
var pages;
var price;

// Class Function
displayBookInfo() {
print(“Book Name is : ${title}”);
print(“Book Author is :${author}”);
print(“Number of Pages: ${pages}”);
print(“Book Price is: ${price}”);
}
}

Explanation

In this example, we have declared a class called Book. The Book class has the following fields

title
author
pages
price

The displayBookInfo() is a class function that prints the fields of the Book class.

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Dart Tutorials

Dart tutorial on this website can be found at:

https://www.testingdocs.com/dart-tutorials-for-beginners/