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