01 Flutter: Hello World

Displaying Hello World on the screen

main.dart
import 'package:flutter/material.dart';
void main() {
runApp(
new Center(
child: new Text(
'Hello, world!'
),
),
);
}

Hello World app using a Stateless widget

import 'package:flutter/material.dart';
void main() {
runApp(
new MaterialApp(
title: 'Hello World App',
home: new myApp(),
)
);
}
class myApp extends StatelessWidget {
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Hello World App'),
),
body: new Center(
child: new Text(
'Hello, world!'
),
),
);
}
}