Ron Veen - Böcker

Written by José Dimas Luján Castillo and Ron Veen - seasoned developers with deep expertise in Java and Kotlin - this practical guide teaches Kotlin through side-by-side Java comparisons, real-world examples, and clear explanations of modern language features.Key FeaturesLearn Kotlin by drawing direct comparisons to core Java conceptsUnderstand null safety, coroutines, extension functions, and DSLs through practical examplesUse Kotlin confidently in backend, Android, and cross-platform developmentPurchase of the print or Kindle book includes a free PDF eBookBook DescriptionThis book is a hands-on programming guide for Java developers who want to gain practical, production-ready knowledge of Kotlin. Whether you’re maintaining Java systems or adopting Kotlin for Android, backend, or cross-platform projects, it will help you bridge the gap by building on your existing understanding of Java’s syntax and design principles.You’ll begin by learning why Kotlin was created and how it improves on Java – exploring types, expressions, control flow, and null handling while mapping each concept to familiar Java constructs. Each topic is introduced with clear purpose, showing how Kotlin’s concise syntax, safety features, and expressive APIs lead to cleaner, more maintainable code.As you progress, you’ll master object-oriented and functional programming, extension functions, smart casting, and interoperability with Java. The second half of the book dives into generics, data and sealed classes, coroutines for concurrency, and DSL design – demonstrating when and why to use these features to build scalable, elegant solutions.By the end, you’ll not only write idiomatic Kotlin but also understand the reasoning behind its design, enabling you to craft modern, reliable applications with confidence.What you will learnWrite Kotlin programs using variables, functions, and control flowModel real-world data with classes, properties, and constructorsHandle missing data safely with nullable types and safe callsSimplify logic using lambdas and extension functionsWork with Kotlin collections and sequences to process data efficientlyUse Kotlin with Java, Gradle, and Maven for seamless project buildsWrite non-blocking code using coroutines and Async flowsCreate custom DSL for your projectsWho this book is forThis book is for software developers who are proficient in Java and want to learn Kotlin for professional application development. It’s especially relevant for Android engineers, JVM backend developers, and full-stack programmers who maintain or extend Java systems. Familiarity with core Java syntax and object-oriented programming is expected.

A pragmatic guide for modernizing your Java EE App with Jakarta EE for cloud-native, serverless excellenceKey FeaturesExplore the cargo tracker application, an industry-relevant example that illustrates key Jakarta EE concepts and practicesLearn how to transition from Java EE to Jakarta EE to modernize your existing applicationsUnderstand the benefits of cloud technologies and how to deploy a Jakarta EE application to the cloudPurchase of the print or Kindle book includes a free PDF eBookBook DescriptionCloud-Native Development and Migration to Jakarta EE will help you unlock the secrets of Jakarta EE's evolution as you explore the migration and modernization of your applications. You’ll discover how to make your code compatible with the latest Jakarta EE version and how to leverage its modern features effectively.First, you’ll navigate the realm of cloud-native development as you demystify containers and get introduced to the Eclipse MicroProfile, a powerful tool in your toolkit. Next, you’ll take the bold step of transitioning your applications from local hardware to the limitless possibilities of the cloud. By following the author’s expert guidance to deploy your Jakarta EE applications on Microsoft Azure, you’ll gain hands-on experience in managing cloud resources.In the final leg of your journey, you’ll explore the world of serverless architecture. You’ll learn to design and run services that are truly serverless, harnessing the potential of the event-driven paradigm for scalability and cost-efficiency.By the end of this book, you’ll have mastered Jakarta EE and become a proficient cloud-native developer. Join us on this exciting journey of transformation and innovation as you pave the way for the future of Jakarta EE and cloud-native development.What you will learnExplore the latest advancements in Jakarta EE and gain a thorough understanding of its core features and capabilitiesUnderstand the principles and practices of designing and building cloud-native applicationsGain a detailed understanding of containers and DockerUncover how to embrace containers in your IT landscapeMove from your own hardware to managed hardware in the cloudDiscover how Kubernetes enhances scalability, resilience, and portabilityWho this book is forThis book is for developers working in small or large companies developing applications in Jakarta EE. If you're looking for a comprehensive guide that will provide you with all the tools and guidance needed to upgrade your existing applications, then this is the book for you. Intermediate-level knowledge and experience with Java EE 5/6/7/8 will help you get the most out of this book.