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Java EE Concurrency API Tutorial

This is a sample chapter taken from the Practical Java EE 7 development on WildFly book edited by Francesco Marchioni. This chapter discusses about the new Java EE Concurrency API (JSR ...
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Top 50 Java Thread Interview Questions Answers for Freshers, Experienced Programmers

You go to any Java interview, senior or junior, experience or freshers,  you are bound to see couple of questions from thread, concurrency and multi-threading. In fact this built-in ...
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ZooKeeper, Curator and How Microservices Load Balancing Works

How Zookeeper makes sure that every worker happily gets some stuff to do from job delegating manager. Apache ZooKeeper is a tool to register, manage and discover services working on ...
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SpringBoot: Introducing SpringBoot

SpringBoot…there is a lot of buzz about SpringBoot nowadays. So what is SpringBoot? SpringBoot is a new spring portfolio project which takes opinionated view of building production-ready ...
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If BigDecimal is the answer, it must have been a strange question

Overview Many developers have determined that BigDecimal is the only way to deal with money.  Often they site that by replacing double with BigDecimal, they fixed a bug or ten.  What ...
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Gearing up for JavaOne 2014 !

Hold that thought! Yeah…I wish I was presenting at Java One 2014 – but I am only worthy of doing that in my dreams right now! But nothing is stopping me from following Java ...
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Getting Started with Gradle: Dependency Management

It is challenging, if not impossible, to create real life applications which don’t have any external dependencies. That is why dependency management is a vital part of every software ...
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Making operations on volatile fields atomic

Overview The expected behaviour for volatile fields is that they should behave in a multi-threaded application the same as they do in a single threaded application.  They are not forbidden ...
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Using @NamedEntityGraph to load JPA entities more selectively in N+1 scenarios

The N+1 problem is a common issue when working with ORM solutions. It happens when you set the fetchType for some @OneToMany relation to lazy, in order to load the child entities only ...
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Spring 4: CGLIB-based proxy classes with no default constructor

In Spring, if the class of a target object that is to be proxied doesn’t implement any interfaces, then a CGLIB-based proxy will be created. Prior to Spring 4, CGLIB-based proxy classes ...
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