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JPA 2 | Dynamic Queries Vs Named Queries

JPA has its own Query language called JPQL. JPQL is very similar to SQL, with one major difference being that JPQL works with entities as defined in the application whereas SQL works ...
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Mockito – Extra Interfaces with annotations and static methods

In the code I have quite recently came across a really bad piece of code that based on class casting in terms of performing some actions on objects. Of course the code needed to be ...
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How Many Threads Does It Take to Fill a Pool?

In recent months we have been seeing a small but persistent percentage of our operations fail with a strange exception – org.springframework.jdbc.CannotGetJdbcConnectionException  ...
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Java Security Tutorial – Step by Step guide to create SSL connection and certificates

In our series of articles on applying JEE security we present you another detailed tutorial on how to create a SSL connection and create certificates in a Java EE application. As mentioned ...
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GC Memory Visualizer Tutorial – Part1

As you may have read from past articles, one of the key Java programmer skills to acquire is your ability to understand and assess the health of the JVM such as the Java heap memory ...
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MOXy is the New Default JSON-Binding Provider in GlassFish 4

GlassFish 4 is now available offering the complete Java EE 7 (JSR-342) platform.  EclipseLink made some major contributions to this release.  The first is providing the JPA 2.1 (JSR-338) ...
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Java testing with Selenium and dynamic ids in html

One of the cool aspects of Selenium, is that not only can you record yourself using a site, you can actually run this as a junit test. Firstly, I’ll install Selenium in Firefox ...
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Taming the JMX on WebLogic Server

Let assume couple things first:I assume you have heard of Java’s JMX features and familiar what it does (expose and manage your service remotely). You ought to know that default ...
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Parsing ESPN API using Java and Google GSON

For my first post, I’ll explain how to parse the ESPN API.  The API documentation can be found at http://developer.espn.com/docs. Firstly, you’ll need to request an API ...
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Singleton Design Pattern – A Lion’s Eye View

A few days ago when I was in my home town, one of my sub-juniors from my colleague attended an interview in an MNC and was severely injured in that interview process. I mean he could ...
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