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Introduction

Every programming journey begins with a simple “Hello World” program. In Dart, this is incredibly straightforward and demonstrates the basic structure of a Dart application.

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The Hello World Program

Here’s the complete Hello World program in Dart: 
void main() {
  print('Hola!!!');
}

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Understanding the Code

Let’s break down each part of this simple program:
The main() function is the entry point of every Dart application. When you run a Dart program, execution starts here.
  • void indicates that this function doesn’t return a value
  • main is the required name for the entry point function
  • () indicates this function takes no parameters (for now)
The print() function displays output to the console.
  • It accepts a value (in this case, a String) as a parameter
  • The text is enclosed in single quotes '...' (you can also use double quotes "...")
  • Each statement in Dart ends with a semicolon ;

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Running Your First Program

1

Create a file

Create a new file named hello_world.dart in your project directory.
2

Write the code

Copy the Hello World code into your file:
void main() {
  print('Hola!!!');
}
3

Run the program

Execute the program from your terminal:
dart hello_world.dart
4

See the output

You should see the output:
Hola!!!
You can change the message inside print() to display any text you want. Try experimenting with different messages!

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Try It Yourself

Modify the program to display your own message: 
void main() {
  print('Welcome to Dart programming!');
  print('My name is [Your Name]');
  print('I am learning Dart!');
}
Each print() statement outputs text on a new line. You can call print() multiple times to display multiple lines of output.

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Next Steps

Now that you’ve created your first Dart program, you’re ready to learn about variables and how to store data in your programs.

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