Have you ever felt frustrated working with someone else's code? Difficult-to-maintain source code is a big problem in software development today, leading to costly delays and defects. Be part of the solution. With this practical book, you'll learn 10 easy-to-follow guidelines for delivering Java software that's easy to maintain and adapt. These guidelines have been derived from analyzing hundreds of real-world systems. Written by consultants from the Software Improvement Group (SIG), this book provides clear and concise explanations, with advice for turning the guidelines into practice. Examples for this edition are written in Java, while our companion C# book provides workable examples in that language. Write short units of code: limit the length of methods and constructors Write simple units of code: limit the number of branch points per method Write code once, rather than risk copying buggy code Keep unit interfaces small by extracting parameters into objects Separate concerns to avoid building large classes Couple architecture components loosely Balance the number and size of top-level components in your code Keep your codebase as small as possible Automate tests for your codebase Write clean code, avoiding "code smells" that indicate deeper problems

Allgegenwartige, in den Hintergrund tretende Informationstechniken konnten den Menschen in allen Lebensbereichen bei der Arbeit, beim Einkaufen, beim Reisen und zu Hause unbemerkt und mitdenkend" unterstutzen. Eine solche Entwicklung bietet nicht nur die Vision, intellektuelle und physische Begrenzungen des Menschen zu uberwinden, sondern auch viele neue Herausforderungen fur bisherige Werte und Lebensweisen. Daher drangt sich die Frage auf, wie wir angesichts dieser Moglichkeiten kunftig leben wollen und wie wir die vor uns stehenden Entwicklungen beeinflussen konnen. Das Buch beschreibt diese Entwicklungen, ihre moglichen wirtschaftlichen und gesellschaftlichen Folgen sowie ihre Auswirkungen auf das Weltbild und das Selbstbild der Menschen und es analysiert die Moglichkeiten, diese Entwicklungen gestaltend zu beeinflussen."

One of the most useful features of today's modern browsers is the ability to store data right on the user's computer or mobile device. Even as more people move toward the cloud, client-side storage can still save web developers a lot of time and money, if you do it right. This hands-on guide demonstrates several storage APIs in action. You'll learn how and when to use them, their plusses and minuses, and steps for implementing one or more of them in your application. Ideal for experienced web developers familiar with JavaScript, this book also introduces several open source libraries that make storage APIs easier to work with. Learn how different browsers support each client-side storage API Work with web (aka local) storage for simple things like lists or preferences Use IndexedDB to store nearly anything you want on the user's browser Learn how support web apps that still use the discontinued Web SQL Database API Explore Lockr, Dexie, and localForage, three libraries that simplify the use of storage APIs Build a simple working application that makes use of several storage techniques

A practical book on website performance for web developers, concentrating mainly on front-end performance improvement. It covers plenty of solid theory, but is also packed with useful, real world hints and tips that you can use on your sites today. Topics covered include: User experience, design and performance Measuring and monitoring performance Setting up a page weight budget Network and server improvements Optimizing images and video Optimizing scripts and third party content Lean DOM operations The book also comes with a handy "cheat sheet" summarizing many of the key tips contained within the book.

Das Buch spielt mit einem neuen, ganzheitlichen Vorstellungsbild des Menschen, der aus drei Einheiten zusammengesetzt gedacht wird: das analytische Denken residiert in einer computerahnlichen linken Gehirnhalfte, die kreative Intuition sitzt wie ein naturbelassenes neuronales Netzwerk in der rechten. Der Mensch denkt, wohin ihn das dritte System lenkt: Ein hyperschneller Anzeichen-Identifizierer alarmiert etwa bei gefahrlichen Ereignissen die Aufmerksamkeit, unbewusst, ohne Denken. Bis auf ein paar Zeilen mathematischer Erklarung ist dieses Buch fulminante Philosophie. Wichtige Ansichten dieser Welt werden gedreht und bleiben zum Teil auf dem Kopf stehen. Die Lehren von Platon, Aristoteles, Konfuzius, Epikur, Freud & Co. erscheinen als notwendige Philosophien verschiedener Gehirnnutzungsvarianten. Das Buch ist eine scharfsinnig-bissig-humorvolle und sehr personliche Auseinandersetzung mit dem, was wir "Lebenssinn" nennen.

Write your first code in Java 17 using simple, step-by-step examples that model real-word objects and events, making learning easy. With Java 17 for Absolute Beginners you'll be able to pick up the concepts without fuss. It teaches Java development in language anyone can understand, giving you the best possible start. You'll see clear code descriptions and layout so that you can get your code running as soon as possible. Author Iuliana Cosmina focuses on practical knowledge and getting you up to speed quickly-all the bits and pieces a novice needs to get started programming in Java. First, you'll discover what type of language Java is, what it is good for, and how it is executed. With the theory out of the way, you'll install Java, choose an editor such as IntelliJ IDEA, and write your first simple Java program. Along the way you'll compile and execute this program so it can run on any platform that supports Java. As part of this tutorial you'll see how to write high-quality code by following conventions and respecting well-known programming principles, making your projects more professional and efficient. Java 17 for Absolute Beginners gives you all you need to start your Java programming journey. No experience necessary. After reading this book, you'll come away with the basics to get started writing programs in Java. What You Will Learn Get started with Java 17 from scratch Use data types, operators, and the stream API Install and use the IntelliJ IDEA and the Gradle build tool Exchange data using the new JSON APIs Play with images using multi-resolution APIs Implement the publish-subscribe architecture Who This Book Is For Those who are new to programming and who want to start with Java.

Eingebettete Systeme begegnen uns mittlerweile uberall im Alltag: vom Mikrocontroller in der Waschmaschine bis hin zum leistungsfahigen DSP im Autoradio. Noch vor wenigen Jahren wurden diese Prozessoren aufwandig in Assembler programmiert und besassen nur in den wenigsten Fallen ein Betriebssystem. Mittlerweile aber bieten leistungsfahige und schlanke Linux-Derivate auch auf einfachen Prozessoren den Komfort der Schnittstellentreiber, des Multi-Threadings und eines Dateisystems. Die vorgestellte Hardware ist teilweise Konsumerprodukten entlehnt und somit gut erhaltlich.

Besonderer Wert wird auf die Praxistauglichkeit der Implementierungen gelegt, und so sind die Beispiele zur Hardwareanbindung via I2C, zur Kommunikation und zur Bildverarbeitung vollstandig durchimplementiert und online frei verfugbar. Das vorliegende Buch richtet sich an Berufsanfanger, Praktiker und Studenten der Informatik und der Ingenieurswissenschaften.

Weitere Informationen zum Buch sowie eine umfangreiche Quelltextsammlung sind verfugbar unter: http: //www.praxisbuch.net/embedded-linux/"

If you're a web developer or designer ready to learn Ruby on Rails, this hands-on guide is the ideal way to get started. Rather than toss you into the middle of the framework's Model-View-Controller architecture, as many books do, Learning Rails 5 begins with the foundations of the Web you already know. You'll learn how to create something visible with Rails' view layer before diving into the more difficult inner layers: the database models and controller code. All you need to begin your Rails journey is HTML experience. Each chapter includes exercises and review questions to test your understanding as you go. Present content by building an application with a basic view and a simple controller Build forms and process their results, progressing from simple to more complex Use Rails scaffolding and REST to build effective applications quickly Connect forms to models and create code that maps directly to database structures Build applications that combine data from multiple tables Use migrations to track changes to your database over time Add common elements such as sessions, cookies, and authentication

* Only in-depth guide on the market focused purely on telling J2EE developers exactly what they need to know to get their J2EE applications up and running on Oracle AS 10g. * Covers the very latest release and provides tons of tips/workarounds compiled by an expert author during numerous projects. * Compares and contrasts the Oracle AS 10g implementation to other J2EE application servers (particularly WebLogic, WebSphere and JBoss), taking advantage of the experience many readers already have with those products. This makes it an ideal book for anyone migrating to 10G from another app server.

Spring is a massive ecosystem and a must-learn tool for Java developers. Spring Start Here introduces you to Java development with Spring by concentrating on the core concepts you'll use in every application you build. You'll learn how to refactor an existing application to Spring, how to use Spring tools to make SQL database requests and REST calls, and how to secure your projects with Spring Security. Spring Start Here teaches you how to build professional-quality applications using Spring and Spring Boot. You'll start with the core components of the framework and then learn how features like Spring Boot simplify the tedious repetitive tasks you face in every project. When you're done, you'll be able to create Spring apps, secure them with authentication and authorization, and move on to the next exciting steps of your Spring journey. Spring Framework is packed with features to make your applications fast, maintainable, robust and secure. This extensive ecosystem of tools for cloud computing, microservices, and more have made it the de facto choice for building enterprise Java applications.

Apply design principles to your classes, preparing them for reuse. You will use package design principles to create packages that are just right in terms of cohesion and coupling, and are user- and maintainer-friendly at the same time. The first part of this book walks you through the five SOLID principles that will help you improve the design of your classes. The second part introduces you to the best practices of package design, and covers both package cohesion principles and package coupling principles. Cohesion principles show you which classes should be put together in a package, when to split packages, and if a combination of classes may be considered a "package" in the first place. Package coupling principles help you choose the right dependencies and prevent wrong directions in the dependency graph of your packages. What You'll Learn Apply the SOLID principles of class design Determine if classes belong in the same package Know whether it is safe for packages to depend on each other Who This Book Is For Software developers with a broad range of experience in the field, who are looking for ways to reuse,share, and distribute their code

Want to add more interactivity and polish to your websites? Discover how jQuery can help you build complex scripting functionality in just a few lines of code. With "Head First jQuery," you'll quickly get up to speed on this amazing JavaScript library by learning how to navigate HTML documents while handling events, effects, callbacks, and animations. By the time you've completed the book, you'll be incorporating Ajax apps, working seamlessly with HTML and CSS, and building your own plug-ins.

If you want to learn--and understand--how to create interactive web pages, unobtrusive script, and cool animations that don't kill your browser, this book is for you.Use jQuery with DOM to overcome the limitations of HTML and CSS Learn how jQuery selectors and actions work together Write functions and wire them to interface elements Use jQuery effects to create actions on the page Make your pages come alive with animation Learn how use jQuery with the new HTML5 elements Build interactive web pages with jQuery and Ajax Create plug-ins to handle reusable functions Build forms and reports in web applications

See how XML works for business needs and RSS feeds
Create consistency on the Web, or tag your data for different purposes
Tag -- XML is it! XML tags let you share your format as well as your data, and this handy guide will show you how. You'll soon be using this markup language to create everything from Web sites to business forms, discovering schemas and DOCTYPES, wandering the Xpath, teaming up XML with Office 2003, and more.
Discover how to
* Make information portable
* Use XML with Word 2003
* Store different types of data
* Convert HTML documents to XHTML
* Add CSS to XML
* Understand and use DTDs

Save time and trouble building object-oriented, functional, and concurrent applications with Scala. The latest edition of this comprehensive cookbook is packed with more than 250 ready-to-use recipes and 1,000 code examples to help you solve the most common problems when working with Scala 3 and its popular libraries. Scala changes the way you think about programming--and that's a good thing. Whether you're working on web, big data, or distributed applications, this cookbook provides recipes based on real-world scenarios for both experienced Scala developers and programmers just learning to use this JVM language. Author Alvin Alexander includes practical solutions from his experience using Scala for component-based, highly scalable applications that support concurrency and distribution. Recipes cover: Strings, numbers, and control structures Classes, methods, objects, traits, packaging, and imports Functional programming techniques Scala's wealth of collections classes and methods Building and publishing Scala applications with sbt Actors and concurrency with Scala Future and Akka Typed Popular libraries, including Spark, Scala.js, Play Framework, and GraalVM Types, such as variance, givens, intersections, and unions Best practices, including pattern matching, modules, and functional error handling

Impractical Python picks up where the complete beginners book leaves off, expanding on existing concepts and introducing new tools and techniques that you'll use every day. Just flip to any page, cookbook-style, and test your skills with software design, code optimization, and debugging. To keep thing interesting, each project includes a zany twist featuring historical incidents, pop culture, literature, comics, and the purely scientific.

Dieses Buch fuhrt von Grund auf in das objektorientierte Programmieren in Java 2 ein. Alle Sprachkonstruktionen von Java 2 werden genau beschrieben und an pragnanten Beispielen veranschaulicht."

The popularity of REST in recent years has led to tremendous growth in almost-RESTful APIs that don't include many of the architecture's benefits. With this practical guide, you'll learn what it takes to design usable REST APIs that evolve over time. By focusing on solutions that cross a variety of domains, this book shows you how to create powerful and secure applications, using the tools designed for the world's most successful distributed computing system: the World Wide Web. You'll explore the concepts behind REST, learn different strategies for creating hypermedia-based APIs, and then put everything together with a step-by-step guide to designing a RESTful Web API.Examine API design strategies, including the collection pattern and pure hypermedia Understand how hypermedia ties representations together into a coherent API Discover how XMDP and ALPS profile formats can help you meet the Web API "semantic challenge" Learn close to two-dozen standardized hypermedia data formats Apply best practices for using HTTP in API implementations Create Web APIs with the JSON-LD standard and other the Linked Data approaches Understand the CoAP protocol for using REST in embedded systems

Beginning Drupal 8 teaches you how to build, maintain, and manage Drupal 8-based web sites. The book covers what Drupal is, using Drupal when building a new web site, installing and configuring Drupal, creating and managing content, managing users, adding functionality to your web site through Drupal modules, and advanced topics on using themes, panels, and views. The book also builds practical examples of common Drupal sites, such as a company website, a community website, and a commerce website, that you can take and expand on to create your own Drupal 8 sites. By reading this book, you will understand the power of the Drupal platform, and why you should be using Drupal if you're not already. Through following the samples in the book, you will quickly build your confidence and your ability to use Drupal. Beginning Drupal 8 gives you the knowledge necessary to build, deploy, and manage web sites on Drupal 8.

Revisiting your code to remove redundancies and inconsistencies-known as refactoring-is a common practice when using programming languages. With this book, author Steve Lindstrom not only shows you how to structure your CSS to build a responsive, easy-to-use website, but also how to use refactoring tools to create faster, more readable CSS. Good CSS is essential to the look and feel of modern sites-as important as the HTML that dictates the site's appearance and the JavaScript that runs the application. This book is ideal for seasoned front-end developers cleaning up an existing project, as well as those starting a new project for the first time. Discover why CSS is easy to learn but difficult to master Understand the difference between good and bad CSS Learn about refactoring and how it relates to CSS Explore methods for executing a CSS refactoring Learn how to deal with browser inconsistencies Investigate common CSS antipatterns-and how to avoid them Use techniques for structuring a project's CSS Recognize when your CSS refactoring is successful

Der enorme Kostendruck in Industrieunternehmen sowie der erkennbare Wandel der Wertschopfungsketten hin zu Wertschopfungsnetzwerken werden die Bedeutung der Beschaffung auf den Unternehmenserfolg sowie die Komplexitat der Beschaffungsaufgaben noch weiter erhohen. Diese Herausforderung kann nur durch den verstarkten Einsatz geeigneter, prozessorientierter Informationstechnologie bei der Beschaffung direkter Guter bewaltigt werden.

Dieses Buch bietet durch die Darstellung des State-of-the-Art und der Entwicklungstendenzen aus Sicht der Wissenschaft sowie namhafter IT-Anbieter-, Beratungs- und Industrieunternehmen erstmals einen ganzheitlichen Uberblick uber Strategien, Prozesse und Systeme bei der Beschaffung direkter Guter. Daraus konnen Handlungsempfehlungen fur die konkrete Ausgestaltung in den Unternehmen gewonnen werden."

If you're new to GitHub, this concise book shows you just what you need to get started and no more. It's perfect for project and product managers, stakeholders, and other team members who want to collaborate on a development project - whether it's to review and comment on work in progress or to contribute specific changes. It's also great for developers just learning GitHub. GitHub has rapidly become the default platform for software development, but it's also ideal for other text-based documents, from contracts to screenplays. This hands-on book shows you how to use GitHub's web interface to view projects and collaborate effectively with your team. Learn how and why people use GitHub to collaborate View the status of a project - recent changes, outstanding work, and historic changes Create and edit files through GitHub without learning Git Suggest changes to projects you don't have permission to edit directly Use tools like issues, pull requests, and branches to specify and collaborate on changes Create a new GitHub repository to control who has access to your project

Microservices Security in Action teaches readers how to secure their microservices applications code and infrastructure. After a straightforward introduction to the challenges of microservices security, the book covers fundamentals to secure both the application perimeter and service-to-service communication. Following a hands-on example, readers explore how to deploy and secure microservices behind an API gateway as well as how to access microservices accessed by a single-page application (SPA). Key Features Key microservices security fundamentals Securing service-to-service communication with mTLS and JWT Deploying and securing microservices with Docker Using Kubernetes security Securing event-driven microservices Using the Istio Service Mesh For developers well-versed in microservices design principles who have a basic familiarity with Java. About the technology As microservices continue to change enterprise application systems, developers and architects must learn to integrate security into their design and implementation. Because microservices are created as a system of independent components, each a possible point of failure, they can multiply the security risk. Prabath Siriwardena is the vice president of security architecture at WSO2, a company that produces open source software, and has more than 12 years of experience in the identity management and security domain. Nuwan Dias is the director of API architecture at WSO2 and has worked in the software industry for more than 7 years, most of which he spent focusing on the API management domain. Both have helped build security designs for Fortune 500 companies including Boeing, Verizon, Nissan, HP, and GE.

Erfolgreiche Veranderung hangt von der zielgerichteten Umsetzung pragmatischer Konzepte ab. Das Business Engineering liefert diese Konzepte. Das Buch zeigt, wie sie in der betrieblichen Realitat zu erfolgreichen Projekten fuhren. Die Nutzung der Informationstechnologie ist dabei das verbindende Element. Die von erfahrenen Praktikern des Business Engineering verfassten Beitrage drehen sich zum einen um technologiegetriebene Wertschopfungspotenziale und zum anderen um den methodischen Transformationsprozess zum Unternehmen des Informationszeitalters. Sie beschaftigen sich mit den zentralen Fragen des unternehmerischen Wandels: Wie andert sich die Geschaftslogik z.B. von Finanzdienstleistern, Industrieunternehmen oder Immobilienmanagement-Gesellschaften unterstutzt durch innovative Anwendungen? Welche Potenziale ergeben sich fur Supply-Chain-Management-Prozesse oder fur ein innovatives HR-Management? Welche Effekte ergeben sich in Netzwerken? Wie lassen sich die Erkenntnisse in KMU anwenden?

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Programmers love its flexibility and speed; designers love its accessibility and convenience. When it comes to creating web sites, the PHP scripting language is truly a red-hot property. In fact, PHP is currently used on more than 19 million web sites, surpassing Microsoft's ASP .NET technology in popularity. Not surprisingly, this surge in usage has resulted in a number of PHP books hitting the market. Only one, though, takes the language beyond traditional Web programming and into mapping, graphing, multimedia, and beyond: PHP Hacks. In PHP Hacks, author Jack Herrington wrings out his 20 years of code generation experience to deliver hands-on tools ranging from basic PHP and PEAR installation and scripting to advanced multimedia and database optimizing tricks. On the practical side of things, PHP Hacks helps you develop more robust PHP applications by explaining how to improve your database design, automate application testing, and employ design patterns in your PHP scripts and classes. In the category of "cool," Herrington explains how to upgrade your Web interface through the creation of tabs, stickies, popups, and calendars. He even examines how to leverage maps and graphics in PHP. There's also a bounty of image and application hacks, including those that show you how to: * Integrate web sites with Google maps and satellite imaging * Dynamically display iPhoto libraries online * Add IRC, SMS, and Instant Messaging capabilities to your Web applications * Drop the latest Wikipedia dictionary onto your Sony PSP * Render graphics and user interfaces with SVG, DHTML, and Ajax Whether you're a newcomer or an expert, you'll find great value in PHP Hacks, the only PHP guide that offers something useful and fun for everyone.

For courses in Introductory Programming for Java and Alice Learn programming basics in a creative context that's more engaging and less complicated Taking a computer programming course can be challenging, time-consuming, and downright frustrating-but there's a better way. Alice 3 to Java: Learning Creative Programming through Storytelling and Gaming, First Edition introduces readers to programming in a creative context that's more engaging and less complicated, while still covering all the essential concepts you'd expect to see in an introductory programming course. Readers are invited to step into the world of creating 3D animations through chapters that present programming concepts with hands-on examples. Throughout the text, readers create a short story or game centered on Lawrence Prenderghast's Haunted Circus, a story by Laura Paoletti. Students bring the story to life through projects and exercises using Alice, an animation tool similar to professional software used by studios like Pixar and DreamWorks. Later in the book, students may apply what they've learned in Alice to using Java, a professional, production-level programming course.