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Don’t Fear the Rapid

The term Rapid Application Development, or RAD, has been around for a few years. From the way it’s avoided in all sensible software development shops, it seems to have gained a bad reputation. There are times when it seems that ...
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Sending a mail in Java (and Android) with Apache Commons Net SMTP : STARTTLS, SSL

Recently working on an Android experiment, I wanted to send emails using a SMTP server, using authentication and encryption, from an android app. Well, I found out that javax.mail on Android is not a really good option, since it d ...
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Efficiently delete data with JPA and Hibernate

You may come to the situation where you have to perform a bulk deletion on a huge amount of datasets stored in a relational database. If you use JPA with Hibernate as underlying OR mapper, you might try to call the remove() method ...
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21st century logging

I think logging should get more attention than we are currently giving it. When designing an application a great deal of effort goes into modelling the customer business logic, making sure all use cases are covered and handled pro ...
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Why Staying in Control of Your SQL is so Important

Lots of blog posts and research papers are written about the topics of scaling up and scaling out. This interesting blog post, for instance, sheds some light on the two strategies with respect to physical maintenance costs, such a ...
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Exploring Spring Controller with Spring Form Tag

In the past article, I have shown you how to process an plain HTML form with Spring controller. But a more powerful way to process form is to use Spring’s @ModelAttribute and its spring:form tags. I will show you how to get that ...
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What is your structure of JEE based web projects?

In this post I will try to discuss diverse organization structures of web based projects, mostly with JSF. The first thought when starting a new project is how to organize my Java packages? Imagine, you develop a web based user an ...
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Java implementation of Optimal String Alignment

For a while, I’ve used the Apache Commons lang StringUtils implementation of Levenshtein distance.  It implements a few well known tricks to use less memory by only hanging on to two arrays instead of allocating a huge n x ...
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Getting Started with Hazelcast

In July I wrote a blog introducing erlang to Java developers, highlighting some of the similarities and differences between the two languages. The erlang virtual machine has a number of impressive, built-in features, one of which ...
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Coordination and service discovery with Apache Zookeeper

Service-oriented design has proven to be a successful solution for a huge variety of different distributed systems. When used properly, it has a lot of benefits. But as number of services grows, it becomes more difficult to unders ...
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