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What’s new in Java 8 – Date API

With the final release of Java 8 around the corner, one of the new features I’m excited about is the new Date API, a result of the work on JSR 310. While Lambda expressions are certainly ...
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Signing SOAP Messages – Generation of Enveloped XML Signatures

Digital signing is a widely used mechanism to make digital contents authentic. By producing a digital signature for some content, we can let another party capable of validating that ...
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Deploy to Maven Central Repository

Do you need to make your Java library publicly accessible? Is your project hosted on GitHub? Do you like idea of “all-in-one deploy to Maven Central Repository” button? I am going ...
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WebLogic Classloader Analysis Tool

The WebLogic Server has a built-in webapp called Classloader Analysis Tool, and you may access it through http://localhost:7001/wls-cat You need to login with same user as you configured ...
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Good use of Closures

Not long ago, in a blog post, I explained what Closure were in Groovy. This blog post will explain one good example of using them. I recently found myself having to write the same ...
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XML to Avro Conversion

We all know what XML is right?  Just in case not, no problem here is what it is all about.                   <root> <node>5</node> </root> Now, ...
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Java 8: Lambda Expressions vs Auto Closeable

If you used earlier versions of Neo4j via its Java API with Java 6 you probably have code similar to the following to ensure write operations happen within a transaction:                   public ...
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An open source JVM Sampling Profiler

It’s a well known deficiency of most existing sampling Java profilers that their collection of stack traces has to happen at a safe point. This is the case for profilers such ...
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Lessons learned: ActiveMQ, Apache Camel and connection pooling

Every once in a while, I run into an interesting problem related to connections and pooling with ActiveMQ, and today I’d like to discuss something that is not always very clear and ...
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Allocating memory for the JVM: a case study

This post is about a recent performance tuning exercise. As always, these start with vague statements about symptoms. This time the devil took the form of “The application is slow ...
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