The Curious Coder's Java Web Frameworks Comparison Spring Mvc, Grails, Vaadin, Gwt, Wicket, Play, Struts and Jsf
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Download Issue
Issue October 2019 | presented by www.jaxenter.com #70 The digital magazine for enterprise developers JavaThe JDK’s hidden 13 treasures i Jakarta EE 8 Let the games begin JDK 13 Why text blocks are worth the wait OpenJFX 13 JavaFX gets its own identity © Teguh Mujiono/Shutterstock.com, Pushkin/Shutterstock.com Illustrationen: Sun Microsystems Inc., S&S Media Editorial Let’s celebrate Java – three times! It’s that time again: A new Java version is here! Java 13 Last but not least: Jakarta EE, the follow-up project of was launched as planned, six months after the release Java EE, has announced its first release under the umbrella of of Java 12, and again it has some interesting features on the Eclipse Foundation. We got hold of the executive director board. In this issue of Jax Magazine, we’ve covered them of the Eclipse Foundation, Mike Milinkovich, and asked him for you in detail. about the current status of Jakarta EE. The good news doesn’t end there, as JavaFX 13 has also been released. The UI toolkit is no longer included in the JDK Happy reading, but has adjusted its new version releases to the new Java re- lease cadence. Find out what’s new here! Hartmut Schlosser Java 13 – a deep dive into the JDK’s 3 Kubernetes as a multi-cloud 17 new features operating system Falk Sippach Patrick Arnold Index Java 13 – why text blocks are worth the wait 6 Multi-tier deployment with Ansible 21 Tim Zöller Daniel Stender Jakarta EE 8 is sprinting towards an 9 Do we need a service mesh? 28 exciting future for enterprise Java Anton Weiss Thilo Frotscher -
Akka Java Documentation Release 2.2.5
Akka Java Documentation Release 2.2.5 Typesafe Inc February 19, 2015 CONTENTS 1 Introduction 1 1.1 What is Akka?............................................1 1.2 Why Akka?..............................................3 1.3 Getting Started............................................3 1.4 The Obligatory Hello World.....................................7 1.5 Use-case and Deployment Scenarios.................................8 1.6 Examples of use-cases for Akka...................................9 2 General 10 2.1 Terminology, Concepts........................................ 10 2.2 Actor Systems............................................ 12 2.3 What is an Actor?.......................................... 14 2.4 Supervision and Monitoring..................................... 16 2.5 Actor References, Paths and Addresses............................... 19 2.6 Location Transparency........................................ 25 2.7 Akka and the Java Memory Model.................................. 26 2.8 Message Delivery Guarantees.................................... 28 2.9 Configuration............................................. 33 3 Actors 65 3.1 Actors................................................ 65 3.2 Typed Actors............................................. 84 3.3 Fault Tolerance............................................ 88 3.4 Dispatchers.............................................. 103 3.5 Mailboxes.............................................. 106 3.6 Routing................................................ 111 3.7 Building Finite State Machine -
Modern Web Application Frameworks
MASARYKOVA UNIVERZITA FAKULTA INFORMATIKY Û¡¢£¤¥¦§¨ª«¬Æ°±²³´µ·¸¹º»¼½¾¿Ý Modern Web Application Frameworks MASTER’S THESIS Bc. Jan Pater Brno, autumn 2015 Declaration Hereby I declare, that this paper is my original authorial work, which I have worked out by my own. All sources, references and literature used or ex- cerpted during elaboration of this work are properly cited and listed in complete reference to the due source. Bc. Jan Pater Advisor: doc. RNDr. Petr Sojka, Ph.D. i Abstract The aim of this paper was the analysis of major web application frameworks and the design and implementation of applications for website content ma- nagement of Laboratory of Multimedia Electronic Applications and Film festival organized by Faculty of Informatics. The paper introduces readers into web application development problematic and focuses on characte- ristics and specifics of ten selected modern web application frameworks, which were described and compared on the basis of relevant criteria. Practi- cal part of the paper includes the selection of a suitable framework for im- plementation of both applications and describes their design, development process and deployment within the laboratory. ii Keywords Web application, Framework, PHP,Java, Ruby, Python, Laravel, Nette, Phal- con, Rails, Padrino, Django, Flask, Grails, Vaadin, Play, LEMMA, Film fes- tival iii Acknowledgement I would like to show my gratitude to my supervisor doc. RNDr. Petr So- jka, Ph.D. for his advice and comments on this thesis as well as to RNDr. Lukáš Hejtmánek, Ph.D. for his assistance with application deployment and server setup. Many thanks also go to OndˇrejTom for his valuable help and advice during application development. -
Alfresco ACSCE-5X Exam
Alfresco ACSCE-5X Exam Volume: 60 Questions Question: 1 What is the class.org.alfresco.model.ContentModel used for? A. Transforming document content into a different format. B. Validating the content of the document follows a certain template. C. Referencing out of the box content model types in your code. D. Trigger automatic metadata extraction from the content. E. Moving content in the repository between folders. Answer: C Question: 2 When would you consider developing your custom server code in Java in place of JavaScript? (Choose three.) A. When a web script needs to be executed inside a transaction. B. When I need to execute part of my code as system user. C. When developing a custom scheduled process. D. When developing a content rule. E. When developing a behavior/policy. Answer: B,C,D Question: 3 Which file is required in order for an AMP file to be valid? A. module.properties B. service-context.xml Leading the way in IT testing and certification tools, www.examkiller.net Alfresco ACSCE-5X Exam C. file-mapping.properties D. web.xml Answer: A Question: 4 An Alfresco Webscript is called via a POST request to the URL /example/mycontent/item1, relative to the Alfresco Content Services REST API base URL. Based on RESTful principles and standards, what will be the result of this call? A. The existing resource ‘item1’ is updated. B. The existing resource ‘item1’ is updated. C. The content of the resource ‘item1’ is returned to the user. D. A new resource ‘item1’ is added. Answer: D Question: 5 How can we modify what data is shown in each row of the Alfresco Share document library, using the supported extension points? A. -
Up up and Out: Scaling Software with Akka
UP UP AND OUT: SCALING SOFTWARE WITH AKKA Jonas Bonér CTO Typesafe @jboner Scaling software with Jonas Bonér CTO Typesafe @jboner ScalingScaling softwaresoftware with with ScalingScaling softwaresoftware with with Akka (Áhkká) The name comes from the goddess in the Sami (native swedes) mythology that represented all the wisdom and beauty in the world. It is also the name of a beautiful mountain in Laponia in the north part of Sweden ScalingScaling softwaresoftware with with Manage System Overload Scale UP & Scale OUT How can we achieve this? How can we achieve this? Let’s use Actors How can we achieve this? What is an Actor? What is an Actor? What is an Actor? • Akka's unit of code organization is called an Actor What is an Actor? • Akka's unit of code organization is called an Actor • Like Java EE servlets and session beans, Actors is a model for organizing your code that keeps many “policy decisions” separate from the business logic What is an Actor? • Akka's unit of code organization is called an Actor • Like Java EE servlets and session beans, Actors is a model for organizing your code that keeps many “policy decisions” separate from the business logic • Actors may be new to many in the Java community, but they are a tried-and-true concept (Hewitt 1973) used for many years in telecom systems with 9 nines uptime Program at a Higher Level Program at a Higher Level Program at a Higher Level • Never think in terms of shared state, state visibility, threads, locks, concurrent collections, thread notifications etc. -
A Software Framework for the Actor Model Focusing on the Optimization of Message Passing
AICT 2018 : The Fourteenth Advanced International Conference on Telecommunications Actor4j: A Software Framework for the Actor Model Focusing on the Optimization of Message Passing David Alessandro Bauer, Juho Mäkiö Department of Informatics and Electronics University of Applied Sciences Emden/Leer Emden, Germany Email: [email protected], [email protected] Abstract—Common actor implementations often use also the Scale Cube by Abbott [6], which describes the three standardized thread pools without special optimization for the dimensions of scalability. message passing. For that, a high-performance solution was To ensure high parallelization, its one benefit to use worked out. The actor-oriented software framework Akka uses multi-core systems. The computer world of the last few internally a ForkJoinPool that is intended for a MapReduce years has been characterized by a change ("The Free Lunch approach. However, the MapReduce approach is not relevant for message passing, as it may lead to significant performance Is Over" [7]) from constantly increasing computing power losses. One solution is to develop a thread pool that focuses on to multi-core systems due to technical limitations. In the message passing. In the implementation of the Actor4j particular, technical progress always lags behind practical framework, the message queue of the actors is placed in requirements (Wirth's law [8]). Up to now, Moore's law was threads to enable an efficient message exchange. The actors are “that the number of transistors available to semiconductor operated directly from this queue (injecting the message), manufacturers would double approximately every 18 to 24 without further ado. -
Cross-Domain Embedding for Vaadin Applications
Cross-Domain Embedding for Vaadin Applications Janne Lautamäki and Tommi Mikkonen Department of Software Systems, Tampere University of Technology, Korkeakoulunkatu 1, FI-33720 Tampere, Finland {janne.lautamaki,tommi.mikkonen}@tut.fi Abstract. Although the design goals of the browser were originally not at running applications or at displaying a number of small widgets on a single web page, today many web pages considerably benefit from being able to host small embedded applications as components. While the web is full such applications, they cannot be easily reused because of the same origin policy restrictions that were introduced to protect web content from potentially malicious use. In this paper, we describe a generic design for cross domain embedding of web applications in a fashion that enables loading of applications from different domains as well as communication between the client and server. As the proof- of-concept implementation environment, we use web development framework Vaadin, a Google Web Toolkit based system that uses Java for application development. Keywords: Vaadin, JSONP, cross-domain applications. 1 Introduction Web applications – systems that resemble desktop applications in their behavior but are run inside the browser – are becoming increasingly common. The current trend is that web pages have dynamic components side by side with the traditional web content, such as static text and images. These dynamic components can be small widgets that for instance display current weather information or stock exchange data, or even full-fledged web applications that offer a service related to the theme of the web page where they are located [1]. Creating dynamic web pages is much more complex than building plain old web pages. -
Technology MX4 Technology MX4, Based in Canada, Is a Company That Works in the Field of Optimization Technologies for Complex Problems
Technology MX4 Technology MX4, based in Canada, is a company that works in the field of optimization technologies for complex problems. About MX4 Technology MX4 is specialized in the development of web applications for K12 schools, which also includes providing training and user support. ZK x MX4 ZK is used in our main product called Trapeze School for the automatic creation of school timetables. The SAAS application targets K12 schools and can handle multiple school configuration and constraints. This tool is offered in 2 languages (French and English) and is being used by more than 150 schools across Quebec. “Simplicity (AJAX) and rapid The team is composed of 5 engineers; 1 for the User interface using development.” ZK and the others are working on the backend micro-services and AI engine. We started the project in 2011 and we have an ongoing delivery process to offer new features every 6 months. We use the following technologies in the project: ZK, Hibernate, Tomcat, Rest, Kafka, ActiveMQ and PostgreSQL. Why ZK We evaluated developing our web application in JSP and we built a small, but complete application that includes our principal needs using 3 different frameworks: OpenXava, Vaadin and ZK. ZK was the easiest and fastest one. ZK was the easiest to use in the sense that it hides and handles the AJAX part, so you don’t have to worry about passing information between the server and the client. As a result it saves the developing ZK – THE SIMPLEST WAY TO MAKE WEB APPLICATIONS RICH 2 CASE STUDY time a lot so we decide to go with ZK. -
The Dzone Guide to Volume Ii
THE D ZONE GUIDE TO MODERN JAVA VOLUME II BROUGHT TO YOU IN PARTNERSHIP WITH DZONE.COM/GUIDES DZONE’S 2016 GUIDE TO MODERN JAVA Dear Reader, TABLE OF CONTENTS 3 EXECUTIVE SUMMARY Why isn’t Java dead after more than two decades? A few guesses: Java is (still) uniquely portable, readable to 4 KEY RESEARCH FINDINGS fresh eyes, constantly improving its automatic memory management, provides good full-stack support for high- 10 THE JAVA 8 API DESIGN PRINCIPLES load web services, and enjoys a diverse and enthusiastic BY PER MINBORG community, mature toolchain, and vigorous dependency 13 PROJECT JIGSAW IS COMING ecosystem. BY NICOLAI PARLOG Java is growing with us, and we’re growing with Java. Java 18 REACTIVE MICROSERVICES: DRIVING APPLICATION 8 just expanded our programming paradigm horizons (add MODERNIZATION EFFORTS Church and Curry to Kay and Gosling) and we’re still learning BY MARKUS EISELE how to mix functional and object-oriented code. Early next 21 CHECKLIST: 7 HABITS OF SUPER PRODUCTIVE JAVA DEVELOPERS year Java 9 will add a wealth of bigger-picture upgrades. 22 THE ELEMENTS OF MODERN JAVA STYLE But Java remains vibrant for many more reasons than the BY MICHAEL TOFINETTI robustness of the language and the comprehensiveness of the platform. JVM languages keep multiplying (Kotlin went 28 12 FACTORS AND BEYOND IN JAVA GA this year!), Android keeps increasing market share, and BY PIETER HUMPHREY AND MARK HECKLER demand for Java developers (measuring by both new job 31 DIVING DEEPER INTO JAVA DEVELOPMENT posting frequency and average salary) remains high. The key to the modernization of Java is not a laundry-list of JSRs, but 34 INFOGRAPHIC: JAVA'S IMPACT ON THE MODERN WORLD rather the energy of the Java developer community at large. -
Reactive Programming with Scala, Lagom, Spark, Akka and Play
Issue October 2016 | presented by www.jaxenter.com #53 The digital magazine for enterprise developers Reactive Programming with Scala, Lagom, Spark, Akka and Play Interview with Scala creator Martin Odersky The state of Scala The Lagom Framework Lagom gives the developer a clear path DevOpsCon 2016: Our mission statement This is how we interpret modern DevOps ©istockphoto.com/moorsky Editorial Reactive programming is gaining momentum “We believe that a coherent approach to systems architec- If the definition “stream of events” does not satisfy your ture is needed, and we believe that all necessary aspects are thirst for knowledge, get ready to find out what reactive pro- already recognized individually: we want systems that are Re- gramming means to our experts in Scala, Lagom, Spark, Akka sponsive, Resilient, Elastic and Message Driven. We call these and Play. Plus, we talked to Scala creator Martin Odersky Reactive Systems.” – The Reactive Manifesto about the impending Scala 2.12, the current state of this pro- Why should anyone adopt reactive programming? Because gramming language and the technical innovations that await it allows you to make code more concise and focus on im- us. portant aspects such as the interdependence of events which Thirsty for more? Open the magazine and see what we have describe the business logic. Reactive programming means dif- prepared for you. ferent things to different people and we are not trying to rein- vent the wheel or define this concept. Instead we are allowing Gabriela Motroc, Editor our authors to prove how Scala, Lagom, Spark, Akka and Play co-exist and work together to create a reactive universe. -
Programming Technologies for the Development of Web-Based Platform for Digital Psychological Tools
(IJACSA) International Journal of Advanced Computer Science and Applications, Vol. 9, No. 8, 2018 Programming Technologies for the Development of Web-Based Platform for Digital Psychological Tools Evgeny Nikulchev1, Dmitry Ilin2 Pavel Kolyasnikov3 Ilya Zakharov5, Sergey Malykh6 4 MIREA – Russian Technological Vladimir Belov Psychological Institute of Russian University & Russian Academy Russian Academy Science Academy of Education Science, Moscow, Russia Moscow, Russia Moscow, Russia Abstract—The choice of the tools and programming In addition, large accumulated data sets can become the technologies for information systems creation is relevant. For basis for machine learning mechanisms and other approaches every projected system, it is necessary to define a number of using artificial intelligence. Accumulation of data from criteria for development environment, used libraries and population studies into a single system can allow a technologies. The paper describes the choice of technological breakthrough in the development of systems for automated solutions using the example of the developed web-based platform intellectual analysis of behavior data. of the Russian Academy of Education. This platform is used to provide information support for the activities of psychologists in The issue of selecting methodological tools for online and their research (including population and longitudinal offline research includes several items. researches). There are following system features: large scale and significant amount of developing time that needs implementation First, any selection presupposes the existence of generally and ensuring the guaranteed computing reliability of a wide well-defined criteria, on the basis of which a decision can be range of digital tools used in psychological research; ensuring made to include or not to include techniques in the final functioning in different environments when conducting mass toolkit. -
Play Framework One Web Framework to Rule Them All
Play Framework One Web Framework to rule them all Felix Müller Agenda Yet another web framework? Introduction for Java devs Demo Summary Yet another web framework? Yet another web framework? Why do we need another web framework? Existing solutions: Servlets, Ruby on Rails, Grails, Django, node.js Yet another web framework? Threaded Evented 1 thread per 1 thread per cpu request core threads may block threads shall never during request block processing Yet another web framework? Threaded Evented Servlets Node.js Ruby on Rails Play Framework Grails Django Yet another web framework? Play is completely asynchronous horizontally scalable out of the box and a lot other goodies... Introduction for Java devs Play Framework MVC pattern Scala and Java API asset compiler for CoffeeScript and LESS + Google Closure Compiler + require.js Play Console play new <appName> play compile|test|run|debug play ~compile|test|run Application structure app directory contains source code, templates and assets standard packages based on MVC: app/controllers app/models app/views Application structure public directory is default for assets as css and javascript files public/stylesheets public/javascripts public/images served directly by web server Routes configuration contains url to controller mapping statically typed pattern: <HTTP method> <url> <controller> Controllers import play.mvc.*; public class Application extends Controller { public static Result index() { return ok("It works!"); } } Templates built-in Scala based template engine