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FreeChart with Groovy and Apache POI

The point of this article is to show you how to parse data from an Excel spreadsheet that looks like this:and turn it into a series of graphs that look like this:Recently I was ...
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Spring @Configuration and FactoryBean

Consider a FactoryBean for defining a cache using a Spring configuration file: <cache:annotation-driven /> <context:component-scan base-package='org.bk.samples.cachexml'></context:component-scan> ...
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Fixing Bugs that can’t be Reproduced

There are bugs that can’t be reproduced, or at least not easily: intermittent and transient errors; bugs that disappear when you try to look for them; bugs that occur as the result ...
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Enterprise SOAP Services in a Web 2.0 REST/JSON World

With the popularlity of JSON and other NoSQL data standard formats, the complexity and in some cases the plain verbosity of XML formats are being shunned. However, XML and the abilities ...
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Using EasyMock or Mockito

I have been using EasyMock for most of time but recently I worked with a few people who were pretty much inclined to use Mockito. Not intending to use two frameworks for the same purpose ...
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ADF : Dynamic View Object

Today I want to write about dynamic view object which allow me to change its data source (SQL query) and attributes at run time. I will use oracle.jbo.ApplicationModule ...
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Bug Fixing – to Estimate, or not to Estimate, that is the question

According to Steve McConnell in Code Complete (data from 1975-1992) most bugs don’t take long to fix. About 85% of errors can be fixed in less than a few hours. Some more can be fixed ...
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Mahout and Scalding for poker collusion detection

When I’ve been reading a very bright book on Mahout, Mahout In Action (which is a great hands-in intro to machine learning, as well), one of the examples has caught my attention. Authors ...
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Hibernate caches basics

Recently I have experimented with hibernate cache. In this post I would like share my experience and point out some of the details of Hibernate Second Level Cache. On the way I will ...
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Java threads: How many should I create

Introduction“How many threads should I create?”. Many years before one of my friends asked me the question, then I gave him the answer follow the guideline ...
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