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Java: Using the specification pattern with JPA

This article is an introduction to using the specification pattern in Java. We also will see how we can combine classic specifications with JPA Criteria queries to retrieve objects ...
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java.util.Random in Java 8

One of the neat features of java.util.Random class in Java 8 is that it has been retrofitted to now return a random Stream of numbers. For eg, to generate an infinite stream of random ...
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Setup your Java development environment in your new Mac in 10 minutes (updated)

This is just a small update post that references 2 older entries ( a, b) , I just combine them in one, like an one step procedure plus making sure that everything works under the latest ...
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RxJava: From Future to Observable

I first came across Reactive Extensions about 4 years ago on Matthew Podwysocki’s blog but then haven’t heard much about it until I saw Matthew give a talk at Code Mesh a few weeks ...
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Entering Undertow Web server

With the arrival of Java EE 7 and the requirement to handle advanced features such as the Web Sockets API and HTTP upgrades (e.g. EJB over HTTP), an important decision has been made ...
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Simple Gradle Java Plugin Customization

As I demonstrated in the post A First Look at Building Java with Gradle, Gradle is particularly concise and easy to apply to the basics of building a Java application when one uses ...
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Hibernate 4.3 ORM Tool

Hibernate has recently released the final version of Hibernate ORM 4.3, a Java-based ORM framework that also supports stored procedures and entity graphs. ORM Tool Hibernate 4.3 Released, ...
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How to write one of the fastest expression evaluators in Java

Granted, the title is a bit of an attention grabber, but nevertheless true (You course you never trust a benchmark you didn’t fake yourself – but that’s another story). So ...
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Hibernate 4.2.8 , javassist 3.18.1 and ClassCastExceptions – watch out your classpath

I am writing this post as a tip and warning rather than an absolute solution. I will try to come back with a workaround for my case (WebSphere 8.5.5), but I am sure that other developers ...
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AmazonSQS and Spring for messaging queue

The next post will demonstrate how to use Spring JMS templates and DLMC’S together with AmazonSQS API in order to place message queue. Why would I use Amazon SQS?Easy to configure Cross-platfom ...
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