Skip to main content

Java Play Framework Interview Questions and Answers

What Is Play Framework?
Play Framework is an open-source, type-safe reactive platform, and high-productivity written in Scala and Java. Play Framework is used to build scalable, fast, and real-time web applications with Java and Scala.
Play was created in May 2007 by software developer Guillaume Bort, while working at Zengularity SA (formerly known as Zenexity). Play is heavily inspired by ASP.NET MVC, Ruby on Rails and Django.

Now Play 2 is fully RESTful - there is no Java EE session per connection. It is also supports to JUnit and Selenium for unit testing.

Is Play Framework open-source?
Yes! Play Framework is an open-source and Licensed under the Apache License, Version 2.0.

What Is The Advantage Of Play Framework?
The list of Advantage of Play Framework is -
1.      Open Source
2.      Fully RESTful framework
3.      Modern stacks
4.      Java and Scala
5.      Amazing error handling
6.      Reactive
7.      Supported
8.      Flexible
9.      Graphically improved developer productivity
10. A full embedded testing framework and an automatic file uploads functionality

Is Play Framework follows MVC pattern?
Yes! Play Framework follows MVC (model–view–controller) architectural pattern.

Which is the latest version?
The latest version of Play Framework is - 2.6.20

What’s new in Play 2.6?
1.      Scala 2.12 support
2.      Injectable Twirl Templates
3.      Added gzip filter
4.      Just as in Scala, Play now has components to enable Java Compile Time Dependency Injection.
5.      Play now uses JSON Web Token (JWT) format for session and flash cookies
6.      SLF4J Marker support has been added to play.Logger and play.api.Logger
7.      Play’s support for futures in asynchronous operations has been improved, using the Futures trait.
8.      Updated Templates with Preconfigured CustomExecutionContexts
9.      Filters Enhancements
10. Testing Improvements
11. Play JSON improvements
12. File Upload Improvements

How to migrate?
The following steps need to be taken to update -
1.      Play upgrade
2.      Sbt upgrade to 0.13.15
3.      Guice DI support moved to separate module
4.      OpenID support moved to separate module
5.      Play JSON moved to separate project
6.      Play Iterates moved to separate project

Labels

Labels:
By Anil Singh | Rating of this article (*****)

Popular posts from this blog

nullinjectorerror no provider for httpclient angular 17

In Angular 17 where the standalone true option is set by default, the app.config.ts file is generated in src/app/ and provideHttpClient(). We can be added to the list of providers in app.config.ts Step 1:   To provide HttpClient in a standalone app we could do this in the app.config.ts file, app.config.ts: import { ApplicationConfig } from '@angular/core'; import { provideRouter } from '@angular/router'; import { routes } from './app.routes'; import { provideClientHydration } from '@angular/platform-browser'; //This (provideHttpClient) will help us to resolve the issue  import {provideHttpClient} from '@angular/common/http'; export const appConfig: ApplicationConfig = {   providers: [ provideRouter(routes),  provideClientHydration(), provideHttpClient ()      ] }; The appConfig const is used in the main.ts file, see the code, main.ts : import { bootstrapApplication } from '@angular/platform-browser'; import { appConfig } from ...
Read more

List of Countries, Nationalities and their Code In Excel File

Download JSON file for this List - Click on JSON file    Countries List, Nationalities and Code Excel ID Country Country Code Nationality Person 1 UNITED KINGDOM GB British a Briton 2 ARGENTINA AR Argentinian an Argentinian 3 AUSTRALIA AU Australian an Australian 4 BAHAMAS BS Bahamian a Bahamian 5 BELGIUM BE Belgian a Belgian 6 BRAZIL BR Brazilian a Brazilian 7 CANADA CA Canadian a Canadian 8 CHINA CN Chinese a Chinese 9 COLOMBIA CO Colombian a Colombian 10 CUBA CU Cuban a Cuban 11 DOMINICAN REPUBLIC DO Dominican a Dominican 12 ECUADOR EC Ecuadorean an Ecuadorean 13 EL SALVA...
Read more

39 Best Object Oriented JavaScript Interview Questions and Answers

Most Popular 37 Key Questions for JavaScript Interviews. What is Object in JavaScript? What is the Prototype object in JavaScript and how it is used? What is "this"? What is its value? Explain why "self" is needed instead of "this". What is a Closure and why are they so useful to us? Explain how to write class methods vs. instance methods. Can you explain the difference between == and ===? Can you explain the difference between call and apply? Explain why Asynchronous code is important in JavaScript? Can you please tell me a story about JavaScript performance problems? Tell me your JavaScript Naming Convention? How do you define a class and its constructor? What is Hoisted in JavaScript? What is function overloadin...
Read more

25 Best Vue.js 2 Interview Questions and Answers

What Is Vue.js? The Vue.js is a progressive JavaScript framework and used to building the interactive user interfaces and also it’s focused on the view layer only (front end). The Vue.js is easy to integrate with other libraries and others existing projects. Vue.js is very popular for Single Page Applications developments. The Vue.js is lighter, smaller in size and so faster. It also supports the MVVM ( Model-View-ViewModel ) pattern. The Vue.js is supporting to multiple Components and libraries like - ü   Tables and data grids ü   Notifications ü   Loader ü   Calendar ü   Display time, date and age ü   Progress Bar ü   Tooltip ü   Overlay ü   Icons ü   Menu ü   Charts ü   Map ü   Pdf viewer ü   And so on The Vue.js was developed by “ Evan You ”, an Ex Google software engineer. The latest version is Vue.js 2. The Vue.js 2 is very similar to Angular because Evan ...
Read more

55 Best TypeScript Interview Questions and Answers - JavaScript!

What Is TypeScript? By definition, "TypeScript is a typed superset of JavaScript that compiles to plain JavaScript." TypeScript is a superset of JavaScript which provides optional static typing, classes and interfaces. => The TypeScript was first made public in the year 2012. => Typescript is a modern age JavaScript development language. => TypeScript is a strongly typed, object oriented, compiled language. => TypeScript was designed by Anders Hejlsberg (designer of C#) at Microsoft. => TypeScript is both a language and a set of tools. As an Example of TypeScript, class Hello {     msg : string ;      constructor ( message : string ) {          this . msg = message ;      }       getMsg () {          return "Hello, " + this . msg ;      } } TypeScript introduced a great deal...
Read more