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JSF Event-based communication: New-school approach

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In the last post, we learnt event-based communication on basis of Observer / Event Listener and Mediator patterns. Due to their shortcomings I would like to show more efficient ways for event-based communication. We will start with Google Guava EventBus and end up with CDI (Contexts and Dependency Injection for the Java EE platform). Guava EventBus Google Guava library has ...

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Spring 3 Internationalization and Localization

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I wanted to add internationalization and localization feature provided by spring 3 to one of my current project recently. I went through the spring documentation and then searched on internet to find some resources. But I could not find a resource which was able to satisfy my client requirement. Most of the tutorials are like hello world application which gives ...

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Hours, Velocity, Silo’d Teams, & Gantts

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I’ve been having some email conversations with some project and program managers turned Scrum Masters. In general here’s how things have proceeded: Their organizations decided agile was a great idea Their organizations decided Scrum was a great idea to implement agile (because they don’t know the difference between Scrum and agile) The teams started working in two-week iterations, sort-of getting ...

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Play Framework posted values revisited

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Working with posted values with Play Framework 2.0, without defining a form mapping, might not be so obvious as it was with Play 1.x, that’s why I’m writing this quick cheatsheet. For this quick sample, let’s define the following view: app/views/index.scala.html @(message: String) message: @message <br /> <h2>Scala form</h2> <form action="@routes.ScalaPoster.save()" method="POST"> scala name: <input name="scala_name"> <br /> scala surname: ...

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JSF Simple Ajax Samples

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Today we will see some Simple Samples of Ajax with JSF. If you want to see other posts about JSF/Web Applications click on the next links: JSF Persisting Objects and Messages after a Redirect ,User Login Validation with JAAS and JSF, JSF: Converter and Bean AutoComplete, JSF – Hello World, Auto Complete, Handling Exceptions on a WebApp, User Authentication (Filter/Servlet), ...

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Java Sequential IO Performance

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Many applications record a series of events to file-based storage for later use. This can be anything from logging and auditing, through to keeping a transaction redo log in an event sourced design or its close relative CQRS. Java has a number of means by which a file can be sequentially written to, or read back again. This article explores ...

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5 Ways to Think Wisely in Development

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Recently I have been reading some popular and interesting social psychology books. The contents are based on empirical evidence and scientific research, and often provide stories about how society operates, and why people behave the way they do. Some of the books in this genre include: Freakonomics, The Tipping Point, Outliers and Kluge The most recent book I read is ...

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Native vs Green threads

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Native vs Green threads  Understanding a multi-threaded program have always been a wild goose chase for many programmers. There are always many aspects to consider when writing a multi-threaded program. Green threads vs Native Threads The difference between green threads vs native threads is something that programmers may be unaware of. Both are mechanisms are ways of achieving a ‘multi-threaded ...

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5′ on IT-Architecture: root concepts explained by the pioneers of software architecture

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The last couple of weeks I am working on a new software architecture course specifically for the insurance and financial sector. During the preparations I was reading many of the most cited articles on software architecture. The concepts described in these articles are so fundamental (and still up-to-date) that every architect really should to know about them. I have enjoyed ...

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Getting Started with Spring Social – Part 2

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A few weeks ago I wrote a post demonstrating what I thought was the simplest application you could write using Spring Social. This application read and displayed a Twitter user’s public data and was written as an introduction to Spring Social and the social coding arena. However, getting your application to display your user’s public data is only half the ...

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