文章来自：DZone: Programming & DevOps news, tutorials & tools
Security in Java EE ApplicationsThe Java EE security specification supports a set of required security functionalities, including authentication, authorization, data integrity, and transport security. Before going deep into Java EE security, everyone should know the following terms:A Caller or User is an...
Foundations of RESTful Architecture
2016-12-15 by Brian SlettenIntroductionThe Representational State Transfer (REST) architectural style is not a technology you can purchase or a library you can add to your software development project. It is first and foremost a worldview that elevates information into a first class element of the architectures we build.The ideas and...
Getting Started with Hibernate Search
2016-12-05 by Sanne GrinoveroSearch Your Database!Hibernate Search is an extension to Hibernate ORM that adds powerful full-text query capabilities, with an API consistent with Hibernate and JPA. It is typically used to implement “full-text search”, such as matching free text input provided by humans.
What Is Eclipse IDE?Eclipse IDE is a cross-platform, multi-purpose, open-source Integrated Development Environment. It was initiated as Java IDE, but quickly became an extensible multi-language development tool that is widely used to develop projects in Java, JavaScript, PHP, C++, Scala, and a lot of other languages. It’s highly...
What is Node?The official description according to the nodejs.org website is as follows:"A platform built on Chrome’s JavaScript runtime for easily building fast, scalable network applications."Translation: Node runs on top of...
About the PlatformEnterprise software development is inherently complex; multi-user systems open the door to concerns such as transactional integrity, security, persistence integration, and interaction between components. Very simply put, the mission of the Java Enterprise Edition is to enable an out-of-the-box set of configurable...
Why Get Git?Git is a postmodern version control system that offers the familiar capabilities of CVS or Subversion, but doesn’t stop at just matching existing tools. Git stretches the very notion of version control systems (VCS) by its ability to offer almost all of its features for use offline and...
IntroductionSwift is the fastest growing programming language today. It is built on LLVM, which is a key part of both Clang and other popular native runtimes like Rust and Julia. It's easy to learn, compiles down to native code, and interoperates with existing languages like Objective-C. Developers are...
IntroductionJava is among the most widely used programming languages in the software development world today. Java applications are used within many verticals (banking, telecommunications, healthcare, etc.), and in some cases each vertical suggests a particular set of design optimizations. Many...
Why MQTT? The Internet of Things (IoT) has recently gained massive traction. IoT challenges enterprises, small companies, and developers with new problems to solve. While HTTP is the de-facto protocol for the human web, communication between machines at scale requires a paradigm shift— steering away from...
Getting Started With Apache JMeter
2016-02-27 by Dmitri TikhanskiLoad Testing TodayLoad testing has changed dramatically in recent years. Today the quality of your testing has a direct impact on your business—you have just three seconds for your website or mobile app to load before you stand to lose up to 40% of your visitors. These perpetually increasing customer...
About DockerAlmost overnight, Docker has become the de facto standard that developers and system administrators use for packaging, deploying, and running distributed applications. It provides tools for simplifying DevOps by enabling developers to create templates called images that can be used to create lightweight virtual...
About Core JavaThis Refcard gives you an overview of key aspects of the Java language and cheat sheets on the core library (formatted output, collections, regular expressions, logging, properties) as well as the most commonly used tools (javac, java, jar).Java Keywords
Introduction What Is Caching? Generally speaking, caching is a technique wherein objects in your application are stored in a temporary storage area known as a cache. The cache itself can be thought of as an in-memory data structure. Cached objects could be anything from the results of expensive and...
Getting Started with OpenStack
2015-04-16 by Sriram SubramanianBy Sriram SubramanianIntroductionHistory and VisionOpenStackTM is an open source Infrastructure-as-a-Service (IaaS) platform. OpenStack was founded by joint efforts from Rackspace and NASA in 2010. It is used to manage large pools of compute, storage, and networking resources in a data...
by: Chris SchaeferAbout Spring BatchSpring Batch is a lightweight, open-source Java framework for batch processing built on top of the popular Spring Framework. In addition to the core framework, Spring Batch also provides developers with components to build robust batch applications that are used...
By Tom MarrsJSON OverviewJSON (JavaScript Object Notation) is a standard text-based data interchange format that enables applications to exchange data over a computer network. Programs written in Ruby, Java/EE, JavaScript, C#/.Net, PHP, etc. can easily consume and produce JSON data because it is...
By Mick KnutsonAbout HTTPThe Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web.Hypertext is a multi-linear set of objects, building a network...
MongoDB is a document-oriented database that is easy to use from almost any language. As of August 2014, MongoDB is by far the most popular NoSQL database according to http://db-engines.com/en/ranking. This Refcard is intended to help you get the most out of MongoDB and assumes that you already know the basics If you’re just starting out,...
Patterns of Modular Architecture
2012-11-28 by Kirk KnoernschildBy Kirk KnoernschildAbout the Modularity PatternsModule frameworks are gaining traction on the Java platform. Though modularity isn't a new concept, it promises to change the way we develop software applications. You'll only be able to realize the benefits of modularity if you understand how to...
About HBaseHBase is the Hadoop database. Think of it as a distributed, scalable Big Data store. Use HBase when you need random, real-time read/write access to your Big Data. The goal of the HBase project is to host very large tables — billions of rows multiplied by millions of columns — on clusters...
By Ricky HoIntroductionPredictive Analytics is about predicting future outcome based on analyzing data collected previously. It includes two phases:Training phase: Learn a model from training dataPredicting phase: Use the model to predict the unknown or future outcomePredictive...
By Jos Dirksen IntroductionJetty, an open-source web server hosted by the Eclipse foundation, is a full-fledged HTTP server and Servlet container that can be easily configured to serve static and dynamic content. You can very easily embed Jetty into your own applications using Java or...
By Dierk KönigAbout GroovyGroovy is a dynamic language for the Java™ Virtual Machine (JVM). It shines with full object-orientation, scriptability, optional typing, operator customization, lexical declarations for the most common data types, advanced concepts like closures and ranges, compact...
By Bruce PayetteAbout WIndows PowershellWhy PowerShell? Why Now? PowerShell was designed to do for Windows what the UNIX shells do for UNIX: provide a powerful, well-integrated command-line experience for the operation system. Unfortunately since Windows is mostly managed through objects (WMI, COM...
By Bear Bibeault & Yehuda KatzWhat are jQuery selectors?jQuery selectors are one of the most important aspects of the jQuery library. These selectors use familiar CSS syntax to allow page authors to quickly and easily identify any set of page elements to operate upon with the jQuery library...
About Design PatternsThis Design Patterns refcard provides a quick reference to the original 23 Gang of Four design patterns, as listed in the book Design Patterns: Elements of Reusable Object-Oriented Software. Each pattern includes class diagrams, explanation, usage information, and a real world...
By Alexander von ZitzewitzAbstractThe technical quality of software can be defined as the level of conformance of a software system to a set a set of rules and guidelines derived from common sense and best practices. Those rules should cover software architecture (dependency structure),...
By Mike KeithIntroductionThe Java Persistence API is the standard for persisting Java objects to a relational database. It includes standardized metadata for defining mappings and configuration, as well as a set of Java APIs that applications can use to persist and query entities. It also...
HTML5: The Evolution of Web Standards
2010-11-08 by James SugrueAbout HTML5HTML5 is a standard for structuring and presenting content on the Web. It incorporates features such as geolocation, video playback and drag-and-drop. HTML5 allows developers to create rich internet applications without the need for third party APIs and browser plug-ins.HTML5 is still under...
Apache Solr: Getting Optimal Search Results
2010-10-18 by Chris HostetterBy Chris HostetterAbout SolrSolr makes it easy for programmers to develop sophisticated, high performance search applications with advanced features such as faceting, dynamic clustering, database integration and rich document handling.Solr (
Getting Started with Apache Hadoop
2010-09-27 by Piotr KrewskiIntroductionThis Refcard presents Apache Hadoop, a software framework that enables distributed storage and processing of large datasets using simple high-level programming models. We cover the most important concepts of Hadoop, describe its architecture, guide how to start using it as well as write and execute various applications on...
By James SugrueAbout UMLThe Unified Modeling Language is a set of rules and notations for the specification of a software system, managed and created by the Object Management Group. The notation provides a set of graphical elements to model the parts of the system.This Refcard outlines the key elements...
Getting Started with NoSQL and Data Scalability
2010-07-05 by Eugene CiuranaBy Eugene Ciurana IntroductionThe DZone Refcard #43 is an introduction to system high availability and scalability terminology and techniques (http://refcardz.dzone.com/refcardz/scalability). The next logical step is the scalable...
Getting Started with Apache Ant
2010-06-25 by James SugrueBy James Sugrue About Apache AntApache Ant is an XML based tool for automating software build processes. Starting out as part of the Apache Tomcat codebase, Ant got its first standalone release in July 2000. Today it is the most widely used build tool for Java projects, enabling developers to adopt...
By Jesse Davis A Brief HistorySun Microsystems created JDBC in the 90s to be the standard for data access on the Java Platform. JDBC has evolved since that time from a thin API on top of an ODBC driver to a fully featured data access standard whose capabilities have now surpassed its aging brother,...
Getting Started with Java GUI Development
2010-04-19 by James SugrueBy James Sugrue About Java GUI DevelopmentFor standalone Java desktop application, developers have two main options. You can use Java Swing, built into the JDK, or you can use the Standard Widget Toolkit (SWT) from Eclipse. Both approaches share some commonality, but each has its own advantages and...
By Matthew McCulloughAbout the PlatformGoogle App Engine is a Cloud Computing SDK, API and Platform that makes Google's publicly recognized scalable infrastructure available to any size development shop.
Agile Adoption: Improving Software Quality
2009-10-19 by Gemba SystemsBy Gemba SystemsAbout Improving Software QualityFaster, better, cheaper. That's what we must do to survive. The Time to Market Refcard addresses faster, the Reduce Cost Refcard addresses cheaper, and this Refcard addresses better. This is about improving the quality of your software; that means...
By Alex MillerAbout Java ConcurrencyFrom its creation, Java has supported key concurrency concepts such as threads and locks. This guide helps Java developers working with multi-threaded programs to understand the core concurrency concepts and how to apply them. Topics covered in this guide...
By Cay Horstmann JSF OverviewJavaServer Faces (JSF) is the “official” component-based view technology in the Java EE web tier. JSF includes a set of predefined UI components, an event-driven programming model, and the ability to add third-party components. JSF is designed to be extensible, easy...
By Jacob OrshalickAbout Seam UISeam is a next generation web framework that integrates standard Java EE technologies with a wide variety of nonstandard technologies into a consistent, unified, programming model. Seam drove the development of Web Beans (JSR-299) and continues to develop innovations...
By Eugene CiuranaAbout SOA PatternsSOA patterns describe common architectures, implementations, and their areas of application to help in the planning, implementation, deployment, operation, and ongoing management and maintenance of complex systems.SOA Fundamentals
By Michael T MinellaAbout JUnit and EasyMockUnit testing and test driven development are proven ways to improve both the productivity of a developer and the quality of their software. JUnit and EasyMock are the predominant choices for testing tools in the Java space. This reference card will guide...
By Molly E. HolzschlagAll About SelectorsJust in case you've not read Core CSS: Part I, I'll briefly review the purpose of a CSS selector. A selector in a style sheet signals the browser to find matches within those markup (HTML, XHTML, XML) documents to which the style sheet is related.
By Mike KeithGeting Started With JPAThe Java Persistence API (JPA) is the Java standard for mapping Java objects to a relational database. Even though proprietary mapping products like Hibernate and TopLink still exist, they are now focused on providing their functionality through the JPA API,...
By Cay S. HorstmannAbout This RefcardJavaServer Faces (JSF) is the "official" component-based view technology in the Java EE web tier. JSF includes a set of predefined UI components, an event-driven programming model, and the ability to add third-party components. JSF is designed to be extensible, easy to use, and...
By Ian RoughleyAbout Struts2Struts2 is the next generation of model-view-controller web application frameworks. It aims at providing increased productivity through reduced XML configuration, smart conventions, and a modular and loosely-coupled architecture. This refcard refers to Struts2 version...
By Molly E. HolzschlagAbout CSSAs Cascading Style Sheets mature as a language of design and a tool of Web site and application management, a deep understanding of how the language really works is essential. However, most people have learned CSS the same way they've learned HTML,by viewing source,...
By Debu PandaWhat is EJB 3?Enterprise JavaBeans (EJB) is a platform for building portable, reusable, and scalable business applications using the Java programming language. Since its initial incarnation, EJB has been touted as a component model or framework that lets you build enterprise Java...
By Craig WallsAbout Spring ConfigurationThe Spring Framework has forever changed the face of enterprise Java development, making it easier than ever to configure and assemble application objects and services in a loosely-coupled manner. As you develop your Spring-enabled applications, you'll find...
By Dave CraneGetting StartedThe standard way to do Ajax is to use the XMLHttpRequest object, known as XHR by its friends. Use XHR directly, or via one of the helpful Ajax libraries such as Prototype or jQuery. How do we use XHR "by hand"? To start with, we need to get a...
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