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Project Student: JPA Criteria Queries

This is part of Project Student. Other posts are Webservice Client With Jersey, Webservice Server with Jersey, Business Layer, Persistence with Spring Data, Sharding Integration Test ...
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Java 8 Friday Goodies: The New New I/O APIs

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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Running multiple ActiveMQ instances on one machine

A few weeks ago I started making use of Apache ActiveMQ again as the JMS provider with my Mule ESB solution. Since it had been a few years that I used ActiveMQ I thought it would be ...
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Implementing dynamic proxies – a comparison

Sometimes there is the need to intercept certain method calls in order to execute your own logic everytime the intercepted method is called. If you are not within in Java EE’s CDI ...
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Using regex to hanging indent a paragraph in Java

This post shows how to hanging indent a long paragraph using regular expression. The method will consider word boundaries, which means it will not break words for the indentation. To ...
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Understanding Spring Web Initialization

Few years ago majority of us were used to write XML config files everywhere, to setup even simple Java EE application. Today using Java or Groovy to configure projects is becoming preferred ...
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Execute Custom queries in Activiti

(This will probably end up in the user guide of the Activiti 5.15 release, but I wanted to share it already) The Activiti API allows for interacting with the database using a high level ...
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sun.misc.Unsafe and off heap memory

The class sun.misc.Unsafe allows you to many of the things you shouldn’t be able to do in Java, but are still useful in very specific cases. It is to be avoided 99% of the time, ...
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Using an Embedded Tomcat with Maven tomcat plugin

When developing a java web application using the Eclipse WTP, we need to have an installation of tomcat in the machine in order to execute the application. If you are using Maven on ...
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Testing Spring components with Mockito

Be able to unit test your spring components without the need of loading the full spring-context with its ad-hoc test configurations it is ,in my opinion, a great advantage because it’s ...
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