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Template Method Pattern – Using Lambda Expressions, Default Methods

Template Method pattern is one of the 23 design patterns explained in the famous Design Patterns book by Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides. The intent of this ...
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A simple application of Lambda Expressions in Java 8

I have been trying to fit in lambda expressions in the code I write and this simple example is a consequence of the same. For those totally unaware of Lambda Expressions in Java, I ...
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Publish/Subscribe Pattern with Apache Camel

Publish/Subscribe is a simple messaging pattern where a publisher sends messages to a channel without the knowledge of who is going to receive them. Then it is the responsibility of ...
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Using Java WebSockets, JSR 356, and JSON mapped to POJO’s

So I have been playing around with Tyrus, the reference implementation of the JSR 356 WebSocket for Java spec. Because I was looking at test tooling I was interested in running both ...
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Elasticsearch: Text analysis for content enrichment

Every text search solution is as powerful as the text analysis capabilities it offers. Lucene is such open source information retrieval library offering many text analysis possibilities. ...
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Rare Uses of a “ControlFlowException”

Control flows are a “relict” from imperative programming, which has leaked into various other programming paradigms, including Java’s object oriented paradigm. Apart from the ...
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Try the jBPM Console NG (Beta)

Hi everyone out there! This is another post about the jBPM Console NG. After 6 months of heavy work I’m happy to be writing this post for the developers community to try it out. ...
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Spring MVC, Ajax and JSON Part 1 – Setting The Scene

I’ve been thinking about writing a blog on Spring, Ajax and JSON for a good while, but I’ve never got around to it. This was mainly because it was quite complicated and ...
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Apache Camel 2.11 released

Last week Apache Camel 2.11 was released. This blog post is a summary of the most noticeable new features and improvements. For a detailed description, see the Camel 2.11 release notes. 1) ...
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Java PDF Libraries

Recently I had a task to select some Java PDF libraries for PDF generation. But it wasn’t a simple task. The first thing which came into my mind was iText. It’s well know ...
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