Exception Handling

 /// Exception Handling : The execution of the program is terminated abnormally

/// DifferedLoadException : Thrown when a deferred library fails to load
/// FromatException : The exception is thrown when a string or some other data does not have an expected format
/// and can't be processed
/// IntegerDivisionByZeroException : The exception is thrown when a number is divided by zero
/// IOException : Base class for all Input-Output related exceptions
/// IsolateSpawnException : Thrown when an isolate can not be created
/// OSError : An Exception holding information about an error from the operating system
/// TimeoutException : Thrown when a scheduled timeout happens while waiting for an async result

//void main() {
  // try {
  //   int x = 5 ~/ 0;
  //   print(x);
  // } on IntegerDivisionByZeroException {
  //   print("Can not divide by zero");
  // };

  /// catch clause :
  /// when we don't know about the exception then use the catch clause
  /// We can spacify one or two parameters to catch(). The first is the "exception object" that was thrown,
  /// and the second is the "StackTrace object".
  // try {
  //   int x = 5 ~/ 0;
  //   print("$x");
  // }
  // catch(e) { // Here, "e" is exception object
  //   print("Exception : $e");
  // }

  // try {
  //   int y = 5 ~/ 0;
  //   print("$y");
  // }
  // //Here, "e" is exception object, "s" is StackTrace object
  // catch(e, s) {
  //   print("Exception : $e");
  //   print(s);
  // }

  /// Finally clause : To ensure that some code runs whether or not an exception is thrown, use a finally clause
  /// To ensure the execution of program, finally clause is used
  // try {
  //   int z = 5 ~/ 0;
  //   print("$z");
  // } catch(e) {
  //   //print("Exception : $e");
  // } finally {
  //   print("finally clause...");
  // }

//}

Comments

Post a Comment

Popular posts from this blog

Pagination with Bloc Pattern in Flutter

Image
  import "package:flutter/material.dart" ; import "package:flutter_bloc/flutter_bloc.dart" ; import "package:pagination_practice/Pagination_with_Bloc/Bloc/bloc.dart" ; import "package:pagination_practice/Pagination_with_Bloc/Bloc/event.dart" ; import "package:pagination_practice/Pagination_with_Bloc/Bloc/state.dart" ; import "package:pagination_practice/Pagination_with_Bloc/post_repo.dart" ; void main () { runApp ( const MyApp () ) ; } class MyApp extends StatelessWidget { const MyApp ( { super .key } ) ; @override Widget build ( BuildContext context ) { return RepositoryProvider < PostRepo >( create: ( context ) => PostRepo () , child: BlocProvider < PostBloc > ( create: ( context ) => PostBloc ( context.read < PostRepo > () ) ..add ( FetchPostsEvent () ) , child: MaterialApp ( title: "Pagination" , debugShowCheckedModeBa...
Read more

Pagination First Practical in Flutter

Image
  import "package:dio/dio.dart" ; import "package:flutter/material.dart" ; import "package:flutter_spinkit/flutter_spinkit.dart" ; import "package:pagination_practice/Pagination/Model/productModel.dart" ; void main () { runApp ( const MyApp () ) ; } class MyApp extends StatelessWidget { const MyApp ( { super .key } ) ; @override Widget build ( BuildContext context ) { return MaterialApp ( title: "HomePage" , debugShowCheckedModeBanner: false, theme: ThemeData ( appBarTheme: const AppBarTheme ( backgroundColor: Colors. grey , centerTitle: true, ) , ) , home: const HomePage () , ) ; } } class HomePage extends StatefulWidget { const HomePage ( { super .key } ) ; @override State < HomePage > createState () { return HomePageState () ; } } class HomePageState extends State < HomePage > { final ScrollController scrollController = Scrol...
Read more

ExpansionPanel with ExpansionPanelList with Complete Collapse Operation in Flutter

Image
  import "package:flutter/material.dart" ; import "package:sdreatech_learning_widget/All_widgets_Ui/customWidget.dart" ; void main () { runApp ( const MyApp () ) ; } class MyApp extends StatelessWidget { const MyApp ( { super .key } ) ; @override Widget build ( BuildContext context ) { return MaterialApp ( title: "ExpansionPanel" , debugShowCheckedModeBanner: false, theme: ThemeData ( appBarTheme: const AppBarTheme ( backgroundColor: Colors. grey , centerTitle: true, ) , ) , home: const ExpansionPanelListPracticalCollapseTask () , ) ; } } class ExpansionPanelListPracticalCollapseTask extends StatefulWidget { const ExpansionPanelListPracticalCollapseTask ( { super .key } ) ; @override State < ExpansionPanelListPracticalCollapseTask > createState () => _ExpansionPanelListPracticalCollapseTaskState () ; } class _ExpansionPanelListPracticalCollapseTaskState...
Read more