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Community

Since begin of the time, the man need to do exchanges of goods materials or services, began with simples goods exchanges. In this time, already has necessity to start the standardization process, the first step was using metals as gold, silver and bronze becoming to representative money today. Nowadays with large number of e-commerce and automation of finance market and another systems that take...
on Aug 25, 2014
The Java is a platform which grown up quickly, for many rations such it can write once time and run anywhere, it runs languages on JVM. There is a myth that Java cannot compile its sources on run time, but it's truth? Have a dynamic language is important to make some projects, for example, calculate taxes to different cities, so the source should be on the database and each city it puts the...
on Jan 19, 2014
Spring is an open source framework whose goals is facilitate the Java developer's life, it began with dependency injection and nowadays works on many plug-ins. Plug-ins such Spring Social, to connects social media like twitter and facebbok, Spring security beyond control inversion. The goal of this post is talk about Spring Data working with Cassandra. Spring Data does part of Spring plug-in,...
on Aug 25, 2013

JavaOne

Why you should write small libraries that do one thing well, over on my real blog at timboudreau.com A response to Eran Hammer's The Fallacy of Tiny Modules.
on Aug 24, 2014
Here are my slides on my "Remoting Retrospective" presentation at JavaOne 2012: Remoting Retrospective (pdf)
on Oct 26, 2012

Databases

Redis is a NOSQL database written in C. The Remote Dictionary Server is a key-value data base whose the storage is in memory, then the write and read will fastest way, but which difference between Redis and Cache? What does happen when the database fall down? Will we lost the all informations? The main goal of this article is talk about the Redis and show an open source project, the redis-...
on Aug 1, 2014
by Florian Müller, Jay Brown, and Jeff Potts, authors of CMIS and Apache Chemistry in Action Save 40% on CMIS and Apache Chemistry in Action. Use promo code 12netja when you check out at manning.com Enterprise Content Management (ECM) repositories often have a lot of types defined, sometimes hundreds in extreme cases. This means that there needs to be a way to organize and retrieve them in a...
on Sep 19, 2012

GUI

So you need to build a visualization of data that must loaded and interface dynamically.  Good looks are important so you chose JavaFX but you are starting from an existing Swing based application.  No problem right?  But what if you have a lot of data to load into your Scene? How do you maintain a positive User Experience? Maybe you are using the NetBeans Platform because... well...
on Nov 13, 2013

Extreme Programming

Have you experienced Scrum? "agile" development? I have.
on Oct 17, 2013

Patterns

What are the cost vs. benefits of creating interfaces and how should they be balanced? I am only considering cases where interfaces are optional and aren’t needed. Benefits: Simplify interaction: Easier to see how to use a List than an ArrayList Make testing easier because replacement implementations can be used Can make future changes easier Costs: Harder to understand what the code is doing...
on Jul 15, 2013

Programming

Acteur is a pattern for pipelining work - a little DI functional goodness for Java. I might have been speaking Swahili when I wrote about Acteur last month. So here's a simple explanation of the design pattern behind it, with a simple sample project.
on Jun 5, 2013
How to use JDK 7's AutoCloseable for more than just I/O - it's actually quite useful in your own APIs. See the real full blog over on timboudreau.com.
on Jun 4, 2013
As this JavaRanch article by Mark Spritzler proofs, there seem to be some people that like to have a generic visitor pattern, so I decided to open source mine (LGPL), which lies around here on my disk for some time. Have fun using it, it is as simple as linking to: <dependency>    <groupId>eu.headcrashing.treasure-chest</groupId> ...
on Oct 3, 2012
I hate adding lots of huge multi-JAR all-purpose common libraries to rather small projects! Huge footprint just for a single class is a side effect of many popular frameworks, unfortunately, due to rather coarse-grained modularity. So I started to publish some of my commons (LPGL'ed) code as single-class self-contained artifacts on The Maven Central Repository. You simple need a Range<T>...
on Sep 7, 2012
Knuth-Morris-Pratt (KMP) Overview According to Wikipedia, the Knuth-Morris-Pratt algorithm "searches for occurrences of a "word" W within a main "text string" S by employing the observation that when a mismatch occurs, the word itself embodies sufficient information to determine where the next match could begin, thus bypassing re-examination of previously matched characters". Being 'A' the...
on May 10, 2012
You want JAXB to unmarshal singletons? You already spent lots of time coding rather complex workarounds applying XmlAdapters and afterUnmarshal callbacks? The solution is astonishingly simple. Possibly so simple that nobody in the JAXB team ever thought it would be necessary to put the word "singleton" somewhere next to the JavaDocs for this... Anyways, here is the solution: import javax.xml...
on Jan 14, 2012
Concentrating on Task in Hand (similar to Mylyn) in NetBeans IDE Often we work on fixing a bug or developing an enhancement for an open source project maintained over a period of many years and having hundreds of source code files.  usually we need a handful of 5 to 10 source files to fix the bug or to add new enhancement.  The project explorer provided by IDE's like NetBeans IDE show...
on Oct 22, 2011

Education

 In 1996, a group that I was working with devised a development process which we called Defect Driven Design, otherwise known as D3. We were a bit disappointed by not surprised that D3 never really caught on but just recently I saw a glimmer of hope for a revival. It was quite a surprise when about a year ago when Cameron Prudy started telling me about this great methodology called Defect...
on Nov 29, 2011
Often code has a bad smell, then it gets time to replace custom lines by common patterns. Sometimes it even makes sense to even replace a single line of code by a class just wrapping that single line (which actually increases code size), if that makes readers better understand what the code does. Unfortunately often such patterns are publicly known but do not exist as ready to...
on Jan 1, 2011

Accessibility

My name is Haim Michael, I am the General Manager for Zindell Technologies and I am an eternal student and a lecturer. I chose to develop the abelski web site for the benefit of all people world wide. I have started to develop it in November 2007 and I continuously update its courses and add new ones. All courses on this web site are available for free personal and academic usage.  The...
on Oct 4, 2010