Dart lang or dart programming language is a language very much similar to popular programming languages Java, Javascript or any other language such as C or C++. Dart is mainly used when we are working with the flutter framework as flutter applications use dart language for development.
In this blog, we will explore some major facts around dart and its features. We will also learn about the reason this dart lang programming is getting a lot of attention lately.
What is a Dart Programming Language?
Dart lang is a Google programming language developed by Google, primarily used for building cross-platform mobile, web, and desktop applications mainly with flutter frameworks.
It’s the language behind the Flutter framework, which allows developers to create high-performance, natively compiled apps from a single codebase. Dart is object-oriented, class-based, and has a syntax similar to JavaScript and Java, making it easy to learn for many developers.
Syntax of Dart Programming Language
Let us now check the syntax of the dart programming language along with a simple example. Let us print a simple “Hello World!” message using Dart on screen.
| void main() {
print(‘Hello, Dart!’); } |
The main () function in dart is a predefined method which acts as an entry point into the application. The command moves forward to the print() statement which is very much similar to other programming languages used to display whatever is contained in this method.
How to Execute the Dart Program?
There are three important methods used to execute the Dart lang programs.
Using the Terminal
You can find the path of the current object you want to execute and type the command following the .dart extension. You will have to mention dart with the file name followed next.
| dart fileName.dart |
Using WebStorm IDE
This method take use of Webstorm IDE which you can use to run and debug the Dart program code. Make sure your program includes the main() function inside to facilitate execution.
Right click on the dashboard space and select “Run <fileName> option to execute the script.
Read More: Top 20+ Programming languages in 2025
Using Shortcut Keys
You can also execute the dart program by using a simple ▶️ (play) button in the IDE or you can use the shortcut key i,e. Ctrl + Shift +F F10 on Windows device.
Features of Dart Programming Language
Let us get familiar with some of the most important and catchy features of dart lang below.
- Dart lang is best suited for User interface design especially modern responsive User interface. It can work with flutter to build native applications on various cross devices.
- You can download the Dart lang on your device for Free i,e. Completely no cost.
- This programming language offers an easier syntax which is comfortable to learn and use while coding our UI.
- The Dart language is an object oriented programming language and hence we will see a lot of objects, classes, encapsulation, polymorphism, and more.
- The dart lang consists of an extensive set of libraries for carrying out various processes including async programming, math, date, time and more.
- You can use Dart on various platforms such as web, desktop, mobile application, and on the server side.
- Dart language supports hot reload with flutter which speeds up the development practices and quickly update the user interface whenever needed.
- The dart lang community is vast and you can also connect with them and explore the world and possibilities using the dart programming.
Keywords Used In Dart Programming Language
Let us get familiar with some of the reserved words which are used for execution of specific functions in the program.
| Dart Language Keywords | |
| abstract | factory |
| as | false |
| assert | final |
| async | finally |
| async* | for |
| await | get |
| break | if |
| case | implements |
| catch | import |
| class | in |
| const | interface (deprecated) |
| continue | is |
| default | library |
| deferred | new |
| do | null |
| dynamic | operator |
| else | part |
| enum | rethrow |
| export | return |
| external | set |
| extends | static |
| false | super |
| sync* | this |
| throw | true |
| try | typedef |
| var | void |
| while | with |
| yield | yield* |
These keywords are used to execute specific functionalities in the program. Let us take a simple example, such as the “default” keyword used in the programme will force an element to execute and keep the default settings on.
Identifiers In Dart Programming Language
Identifiers in dart lang is a name given to the variables, functions in the programming which must follow certain rules as per the dart guidelines.
- Identifiers in dart cannot include special symbols except the dollar sign ($) or an underscore(_).
- Identifiers in Dart programming are case sensitive.
- In Dart language giving space between identifiers is prohibited or not allowed.
- Your identifier must be unique which is used to define a value.
- Note that your identifier cannot be a keyword.
| Valid Identifiers | Invalid Identifiers |
| firstName | Var (keyword) |
| first_name | first name (space) |
| num1 | first-name (hyphen) |
| $result | 1number (starts with digit) |
Comments In Dart Programming Language
Comments in Dart lang are used to improve the readability of a program as they are not executed in the program and is used as a guiding method for developers or others who go through the program. Let us check how you can use comments in dart programming language.
-
- Single Line Comment: This comment is enclosed within the “//” tag. Any text included within these lines are treated as single line comments and are ignored during execution.
- Multi-line Comments: These comments are enclosed within the “/**/” tags which can include more than one line inside.
| void main() {
// This is a single-line comment print(‘Hello, Dart!’); // This prints a message to the console /* This is a multi-line comment. You can write comments that span multiple lines. */ print(‘Comments help explain code.’); } |
Examples of Dart Programming Language
We will understand dart lang a little more using some of the basic examples coded in this programming language.
- Let us use a simple program to declare a variable and print the message on the screen.
| void main() {
// Declare variables String name = ‘Alice’; int age = 25; // Print a greeting message print(‘Hello, my name is $name.’); print(‘I am $age years old.’); } |
Output
| Hello, my name is Alice.
I am 25 years old. |
Read More: Lua Programming Language: Overview and Features
- Let us perform addition of two numbers using the dart programming language.
| void main() {
int a = 10; int b = 20; int sum = a + b; print(‘The sum is: $sum’); } |
Output
| The sum is: 30 |
- We are using Dart programming language to find whether a number is even or odd.
| void main() {
int num = 7; if (num % 2 == 0) { print(‘$num is even.’); } else { print(‘$num is odd.’); } } |
Output
| 7 is odd |
- Let us calculate the factorial of a given number using the dart programming language.
| void main() {
int number = 5; int factorial = 1; for (int i = 1; i <= number; i++) { factorial *= i; } print(‘Factorial of $number is $factorial’); } |
Output
| Factorial of 5 is 120 |
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Dart Lang Programming FAQs
Q1. What is Dart Programming language?
Ans: Dart lang is a Google programming language developed by Google, primarily used for building cross-platform mobile, web, and desktop applications mainly with flutter frameworks.
Q2. Can I download Dart Programming for Free?
Ans: Yes Dart programming language is an open source framework which can be downloaded and used for free.
Q3. Is Dart better than Python?
Ans: Dart and Python consist of many similarities such as easier syntax, object oriented programming, and more. You can use any of these programming languages based on your suitability.
Q4. Is it a dart backend or frontend?
Ans: Dart lang is a frontend language used to develop the user interface of an application.
