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How to create web-app with Quartz Scheduler and logging

I sometimes help out users in Quartz Scheduler forums. Once in a while some one would ask how can he/she setup the Quartz inside a web application. This is actualy a fairly simple thing ...
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When is Enough, Enough?

This summer, I had the pleasure of chatting with a distant cousin who was traveling through town. He is a retired project manager from NASA, but they keep bringing him back as a consultant, ...
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How to maintain history of tables in Hibernate

To Maintain history of database or keep track of modification of database table row , we create a version table that contains fields identical to original table.Whenever original table ...
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Systems that Run Forever Self-heal and Scale

I recently saw a great presentation by Joe Armstrong called “Systems that run forever self-heal and scale” . Joe Armstrong is the inventor of Erlang and he does mention Erlang quite ...
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Core Java Interview Questions

Q. What if the main method is declared as private? Answer: The program compiles properly but at runtime it will give “Main method not public.” message. Q. What is meant by pass ...
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Speed Up with Fast Java and File Serialization

Since the first version of Java, day-by-day many developers have been trying to achieve at least as good of performance as in C/C++. JVM vendors are doing their best by implementing ...
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Google Cloud Messaging: Collapsible Messages

In a previous article, we looked at how to set up Google Cloud Messaging (GCM) in Android applications. We learned that GCM is a free service that allows us to push messages from the ...
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Backreferences in Java Regular Expressions

Backreferences in Java Regular Expressions is another important feature provided by Java. To understand backreferences, we need to understand group first. Group in regular expression ...
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Testing Java EE 6 with Arquillian (incl. JPA, EJB, Bean Validation and CDI)

For a very long time, I heard quite a lot of people saying good things about Arquillian. Whilst I have been reading articles around its use, I couldn’t really find one that covers ...
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A clean approach to Wicket models

One of the core concepts of Apache Wicket web framework is the model and IModel as its programming interface. Wicket components rely heavily on models, which makes them important ...
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