main.dart

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