Category: Java Programming

Dieses Buch bietet eine umfassende Einführung in die Spring-Grundlagen wie Dependency Injection und aspektorientierte Programmierung. Darüber hinaus wird die Unterstützung für Transaktionen, Persistenz, verteilte Anwendungen und das Spring net Framework erläutert. Schließlich erhält der Leser einen Überblick über Technologien wie Spring net move, Spring defense und Spring internet prone. Eine Beispielanwendung illustriert die Themen.
Die three. Auflage wurde komplett auf die model Spring three überarbeitet. Außerdem wurden aktuelle Themen wie SpringSource dm Server ergänzt.

"Every programming language has its quirks. This full of life ebook unearths oddities of the Java programming language via enjoyable and thought-provoking programming puzzles."

--Guy Steele, solar Fellow and coauthor of The Java™ Language Specification

"I laughed, I cried, I threw up (my palms in admiration)."

--Tim Peierls, president, previous Artisans LLC, and member of the JSR 166 professional Group

How good do you actually comprehend Java? Are you a code sleuth? have you spent days chasing a trojan horse attributable to a seize or pitfall in Java or its libraries? Do you love brainteasers? Then this is often the e-book for you!

In the culture of Effective Java™, Bloch and Gafter dive deep into the subtleties of the Java programming language and its middle libraries. Illustrated with visually beautiful optical illusions, Java™ Puzzlers beneficial properties ninety five diabolical puzzles that train and entertain. an individual with a operating wisdom of Java will comprehend the puzzles, yet even the main professional veteran will locate them hard.

Most of the puzzles take the shape of a brief software whose habit is not what it kind of feels. are you able to work out what it does? Puzzles are grouped loosely in accordance with the positive factors they use, and particular suggestions persist with every one puzzle. The recommendations cross well past an easy rationalization of the program's behavior--they enable you keep away from the underlying traps and pitfalls for solid. A convenient catalog of traps and pitfalls in the back of the publication presents a concise taxonomy for destiny reference.

Solve those puzzles and you can by no means back fall prey to the counterintuitive or vague behaviors that could idiot even the main skilled programmers.

This e-book is meant for college kids, researchers, and execs drawn to evolutionary algorithms at graduate and postgraduate point. No arithmetic past uncomplicated algebra and Cartesian graphs tools is needed, because the objective is to inspire employing the JAVA toolkit to enhance an appreciation of the ability of those techniques.

Understand and make the most of Java Lambdas

About This Book

• Take a deep dive into one of many unmarried most vital additions to fashionable Java
• Master Java lambdas, and completely comprehend features, periods, and scope.
• Improve your programming abilities, so that it will provide help to write cleanser and extra dynamic code

Who This publication Is For

Learning Java Lambdas is for builders seeking to improve their Java talents and familiarize themselves with some of the most very important new beneficial properties of Java. This booklet isn't for absolute newbies and should be extra fitted to execs who're already happy with Java coding. you will have a uncomplicated wisdom of Java ahead of interpreting this book.

What you are going to Learn

• What a lambda is and the way it differs from different Java features
• How to take advantage of lambdas successfully on your personal projects
• The use of strategy references and complex scoping
• The distinction among lambdas and closures
• The ameliorations in bytecode produced whilst utilizing lambdas

In Detail

In this brief booklet, we take an in-depth examine lambdas in Java, and their aiding positive aspects. The ebook covers crucial issues, corresponding to useful interfaces and kind inference, and the main transformations among lambdas and closures. you'll know about the historical past to sensible programming and lambdas, ahead of relocating directly to realizing the elemental syntax of lambdas and what differentiates those nameless features from average nameless sessions. finally, you are going to tips on how to invoke lambdas and think about the bytecode generated.

After studying this booklet, you are going to comprehend lambdas extensive, their history, syntax, implementation information, and the way and whilst to take advantage of them. you will even have a transparent wisdom of the adaptation among capabilities and periods, and why that is proper to lambdas. this information will make it easier to have fun with the advancements to style inference that force most of the new good points in sleek Java, and should bring up your realizing of technique references and scoping.

Style and approach

This e-book is a deep dive into one of many middle new beneficial properties of the Java language – Lambdas. It covers them in nice info, with the intention that you absolutely know the way lambdas paintings, and the way they are often positioned to take advantage of on your personal programs.

Key Features

• Discover ordinary expressions and the way they work
• Implement common expressions with Java on your code base
• Learn to take advantage of typical expressions in emails, URLs, paths, and IP addresses

Book Description

Regular expressions are a robust instrument within the programmer's toolbox and make allowance development matching. also they are used for manipulating textual content and information. This e-book offers you the knowledge (and useful examples) to resolve real-world difficulties utilizing regex in Java.

You will start through studying what ordinary expressions are and the way they paintings with Java. This easy-to-follow consultant is a smart position from which to get yourself up to speed with the middle thoughts of standard expressions and to grasp its implementation with the gains of Java nine. you'll how to fit, extract, and rework textual content through matching particular phrases, characters, and styles. you'll study whilst and the place to use the equipment for locating styles in digits, letters, Unicode characters, and string literals. Going ahead, you are going to discover ways to use zero-length assertions and lookarounds, parsing the resource code, and processing the log documents. ultimately, you are going to grasp counsel, methods, and top practices in regex with Java.

What you are going to learn

• Understand the semantics, principles, and center suggestions of writing Java code related to general expressions
• Learn concerning the java.util.Regex package deal utilizing the development classification, Matcher classification, code snippets, and more
• Match and catch textual content in regex and use back-references to the captured groups
• Explore Regex utilizing Java String equipment and regex functions within the Java Scanner API
• Use zero-width assertions and lookarounds in regex
• Test and optimize a poorly appearing regex and diverse different functionality tips

About the Author

Anubhava Srivastava has greater than 22 years event in structure, layout, and software program improvement. He specializes more often than not within the J2EE know-how stack, internet applied sciences, CICD, test-driven improvement, and AWS cloud-based development.

He is an lively contributor to the Stack Overflow neighborhood. He at present stands within the most sensible 35 clients when it comes to reputations out of the 7.5 million Stack Overflow clients. he's keen about standard expressions and is usually keen to sharpen his regex abilities additional. He has spoke back just about 10,000 regex questions about Stack Overflow.

He has authored and published a test-driven framework, referred to as GenericFixture, for FitNesse as an open resource software.

You can stick with him on Twitter at @anubhava.

Table of Contents

1. Getting all started with usual Expressions
2. Understanding the center Constructs of Java ordinary Expressions
3. Working with teams, taking pictures, and References
4. Regular Expression Programming utilizing Java String and Scanner APIs
5. Introduction to Java usual Expression APIs - trend and Matcher Classes
6. Exploring Zero-width Assertions, Lookarounds, and Atomic Groups
7. Understanding the Union, Intersection, and Subtraction of personality Classes
8. Regular Expression Pitfalls, Optimization, and function Improvements

In Detail

OpenFlow is an open interface for remotely controlling tables in community switches, routers, and entry issues. it really is thought of a turning aspect in software program outlined Networking (SDN), info heart networking and virtualization as, safer and effective info facilities are being outfitted utilizing OpenFlow. It defines a protocol that shall we a controller use a typical set of directions so as to add, adjust, or delete entries in a switch's forwarding table.

Starting with an advent to SDN and OpenFlow, you are going to know about the position of every construction block, relocating onto demonstrations of the way SDN/OpenFlow can be utilized to supply new providers and lines, for you to swap the way in which that networking works and the leading edge enterprise affects. by way of the tip of this useful advisor, you might have an perception into the software program outlined Networking and OpenFlow fundamentals.

Packed with element, this e-book will stroll you thru the necessities; you are going to find out about the OpenFlow protocol, switches, and controllers. Following on from this, you'll be taken via a couple of sensible, hands-on examples on how you can use a community emulation platform known as OpenFlow laboratory. you'll how to boost your cutting edge community software utilizing the OpenFlow controller’s API quick, and attempt your community software with out commissioning any OpenFlow apparatus. additionally, you will be brought to the concept that of software program outlined Networking and the main points of OpenFlow’s protocol, besides the construction blocks of an OpenFlow networking deployment. This booklet will train you ways to setup your OpenFlow/SDN laboratory utilizing cutting-edge expertise and open resource offerings.

Approach

A step by step, example-based advisor so that it will assist you achieve hands-on adventure with the structures and debugging instruments on OpenFlow

Who this ebook is for

If you're a community engineer, architect, junior researcher or an program developer, this e-book is perfect for you. it is important to have a few point of community adventure, wisdom of vast networking strategies, and a few familiarity with day- to- day operation of computing device networks. preferably, you have to even be acquainted with programing scripting/languages (especially Python and Java), and method virtualization.

Für Java-Entwickler sind nicht nur die Sprachelemente der Programmiersprache Java und die umfangreichen Bibliotheken des JDK (Java improvement equipment) von Bedeutung; auch die Ablaufumgebung (JVM = Java digital desktop) ist suitable für die Softwareentwicklung in Java. Das vorliegende Buch "Java middle Programmierung" befasst sich mit zwei grundlegenden und wichtigen Aspekten der Java-Ablaufumgebung: dem Java reminiscence version (JMM) und der Freispeicherverwaltung (Garbage Collection).

Beim Java reminiscence version geht es um die Regeln und Garantien für konkurrierende Zugriffe auf Java-Objekte in Multithread-Programmen. Es werden u.a. folgende Fragestellungen betrachtet: Wann und unter welchen Umständen werden Modifikationen, die ein Thread an einem Java-Objekt gemacht hat, anderen Threads sichtbar? was once genau ist der Effekt von Sprachmitteln wie synchronized, risky und ultimate? was once ist eine CAS-Operation? Wofür werden atomare Variablen benötigt? used to be ist die Lock unfastened Programming und warum könnte es mich als Java-Entwickler interessieren?
Schon seit Langem ist das reminiscence version Bestandteil der Sprachspezifikation von Java. Es ist aber viele Jahre lang wenig beachtet worden. Erst seit Multi-CPU- und Multi-core-Plattformen vorherrschend sind, gewinnt das Wissen über die info des reminiscence versions an Bedeutung. Detaillierte Kenntnisse des reminiscence versions sind unerlässlich für alle Java-Entwickler, die Java-Anwendungen für Multi-CPU- und Multi-core-Hardware entwickeln und sich mit der Optimierung dieser Anwendungen hinsichtlich Skalierbarkeit und Performanz befassen.

Zwar geht es auch beim Thema Freispeicherverwaltung um den "Speicher", aber mit dem Java reminiscence version hat die rubbish assortment nichts zu tun. Es geht vielmehr um die Strategien, die eine virtuelle Maschine anwendet, um den im Programm mit new angeforderten Freispeicher zu verwalten und ihn wieder freizugeben, wenn er nicht mehr benötigt wird. Virtuelle Maschinen verwenden dazu unterschiedliche Algorithmen. Im vorliegenden Buch werden die Garbage-Collection-Algorithmen der populären HotSpot JVM von solar (heute Oracle) betrachtet. Es wird erläutert, warum Generational rubbish assortment sinnvoll ist, wie die HotSpot JVM den Freispeicher aufteilt und wie die parallelen und konkurrierenden Garbage-Collection-Algorithmen funktionieren. Auch der relativ neue „Garbage-First“ (G1) Collector wird vorgestellt. Ein wesentliches Augenmerk liegt dabei auf dem Tuning dieser zahlreichen Garbage-Collection-Algorithmen. Es lohnt sich beispielsweise zu prüfen, wie viel von der gesamten CPU-Zeit einer Java-Applikation für die rubbish assortment aufgewendet werden muss. Idealerweise möchte guy einen möglichst hohen Durchsatz haben, d.h. es soll viel CPU-Zeit für die Anwendung zur Verfügung stehen und nur wenig Zeit für die Freispeicherverwaltung aufgewendet werden. Auch sollte die rubbish assortment nicht zu störenden Pausen führen, in denen sämtliche Applikations-Threads zum Zwecke der rubbish assortment angehalten werden. Um die Maximierung des Durchsatzes und die Minimierung der Pausenzeiten zu erreichen, bietet die HotSpot JVM zahlreiche Tuning-Möglichkeiten.

Das Buch basiert auf einer Artikelserie, die die Autoren im Java Magazin in den Jahren 2008 bis 2011 veröffentlicht haben.

A Hands-On advisor to Equinox and the OSGi Framework

In OSGI and Equinox: developing hugely Modular Java™ Systems , 3 major specialists exhibit developers—for the 1st time—exactly how one can utilize those step forward applied sciences for development hugely modular dynamic systems.

You’ll speedy start with Eclipse package deal tooling, create your first OSGi-based process, and flow speedily to classy creation improvement. subsequent, you’ll grasp top practices and methods for growing structures with extraordinary modularity and maintainability. You’ll research all approximately OSGi’s Declarative providers and the way to take advantage of them to resolve a wide selection of real-world difficulties. ultimately, you’ll see every little thing that you’ve realized applied in a whole case examine undertaking that takes you from early prototype via software delivery.

For each Eclipse developer, despite past adventure, this book

• Combines a whole hands-on instructional, on-line pattern code at each step, and deep technical dives for operating developers
• Covers the OSGi programming version, part improvement, OSGi prone, Eclipse package deal tooling, server-side Equinox, and lots more and plenty more
• Offers wisdom, information, and most sensible practices for overcoming the complexities of creating modular structures
• Addresses sensible matters starting from integrating third-party code libraries to server-side programming
• Includes a entire case research that is going past prototyping to carry an absolutely sophisticated
  and refactored construction system

Whatever your program, undefined, or challenge area, so that it will construct cutting-edge software program platforms with OSGi and Equinox, you can find this booklet to be a necessary resource.

Key Features

• Learn to manage, configure, and deal with RabbitMQ instances
• Discover how you can safe and troubleshoot RabbitMQ instances
• This e-book is absolutely up to date with the entire newest adjustments to model 3.5

Book Description

RabbitMQ is Open resource Message Queuing software program in keeping with the complicated Message Queue Protocol typical written within the Erlang Language. RabbitMQ is a perfect candidate for large-scale tasks starting from e-commerce and finance to special information and social networking due to its ease of use and excessive functionality. dealing with RabbitMQ in this kind of dynamic surroundings could be a demanding job that calls for an outstanding realizing not just of ways to paintings correctly with the message dealer but additionally of its top practices and pitfalls.

Learning RabbitMQ starts off with a concise description of messaging strategies and styles, then strikes directly to concrete useful eventualities for publishing and subscribing to the dealer in addition to easy management. this data is extra increased by way of exploring the best way to identify clustering and excessive availability on the point of the message dealer and the way to combine RabbitMQ with a couple of applied sciences akin to Spring, and firm provider bus strategies corresponding to MuleESB and WSO2. we are going to examine complex issues akin to functionality tuning, safe messaging, and the internals of RabbitMQ. eventually we'll paintings via case-studies in order that we will see RabbitMQ in motion and, if whatever is going improper, we will discover ways to get to the bottom of it within the Troubleshooting section.

What you are going to learn

• Apply messaging styles utilizing the message broker
• Administer RabbitMQ utilizing the command line, administration internet console, or administration relaxation services
• Create a cluster of scalable, and highly-available, RabbitMQ instances
• Use RabbitMQ with the Spring Framework, MuleESB, WSO2, and Oracle databases
• Deploy RabbitMQ utilizing Puppet, Vagrant, or Docker
• Fine-tune the functionality of RabbitMQ
• Monitor RabbitMQ utilizing Nagios, Munin, or Monit
• Secure, troubleshoot, and expand RabbitMQ

About the Author

Martin Toshev is a software program developer and Java fanatic with greater than 8 years of expertise and large services originating from initiatives in parts resembling company Java, social networking, resource code research, web of items, and funding banking in businesses corresponding to Cisco and Deutsche Telekom. he's a graduate of desktop technology from the college of Sofia. he's additionally a professional Java expert (SCJP6) and a professional IBM cloud computing resolution consultant. His components of curiosity comprise a variety of Java-related applied sciences (Servlets, JSP, JAXB, JAXP, JMS, JMX, JAX-RS, JAX-WS, Hibernate, Spring Framework, Liferay Portal, and Eclipse RCP), cloud computing applied sciences, cloud-based software program architectures, firm software integration, and relational and NoSQL databases. Martin is likely one of the leaders of the Bulgarian Java clients workforce (BGJUG), a standard speaker at Java meetings, and one of many organizers in the back of the jPrime convention in Bulgaria (http://jprime.io/).

Table of Contents

1. Introducing RabbitMQ
2. Design styles with RabbitMQ
3. Administration, Confi guration, and Management
4. Clustering
5. High Availability
6. Integrations
7. Performance Tuning and Monitoring
8. Troubleshooting
9. Security
10. Internals
11. Contributing to RabbitMQ

Master software improvement with Java WebSocket

Build dynamic company net purposes that totally leverage state of the art conversation applied sciences. Written via the top specialist on Java WebSocket programming, this Oracle Press consultant bargains useful improvement techniques and distinctive instance purposes. Java WebSocket Programming explains easy methods to layout client/server functions, contain full-duplex messaging, identify connections, create endpoints, deal with course mapping, and safe info. You’ll additionally tips on how to encrypt internet transmissions and increase legacy functions with Java WebSocket.

• Develop internet functions utilizing the Java WebSocket API
• Create and submit annotated and programmatic endpoints
• Manage the lifecycle occasions of WebSocket endpoints
• Maintain trustworthy connections around the endpoint lifecycle
• Manage synchronous and asynchronous messaging
• Define encoding and deciphering thoughts for complicated messaging
• Configure message timeouts, dimension limits, and exceptions
• Map message paths and path incoming URIs to net containers
• Secure information, authenticate clients, and encrypt connections