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Community

This is the third part (part 1, part 2) of a multi-part video series where Lincoln Baxter (@lincolnthree) and I are interactively building a Forge addon to add Java EE 7 Batch functionality. Part 1 showed how to get started with creating an addon, add relevant POM dependencies, build and install the addon using Forge shell, add a new command batch-new-jobxml, and add --reader, --processor, --...
on May 28, 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
HTML Online Editor Sample I have been contemplating for a number of months about reviewing a cache of articles and videos on topics like Performance tuning, JVM, GC in Java, Mechanical Sympathy, etc... and finally took the time to do it - may be this was the point in my intellectual progress when was I required to do such a thing! Thanks to Attila-Mihaly for giving me the...
on Jan 17, 2014
Looking Forward to JavaOne Sunday: JUG Forums, NetBeans Day, GlassFish, Technical Keynotes, Duke's Choice Awards It used to be that Sunday was a fairly relaxing day for most. Not anymore! This year, Sunday is already overcrowded with many more events and sessions than one can possibly attend, as the JavaOne 2013 Content Catalog Sunday entries demonstrate. Sunday's activity can be divided into...
on Sep 22, 2013
My company uses a large number of software applications to support all aspects of its business. These software applications are either "bought" or "built". The portions of the company that cannot be supported by purchased software are supported by custom developed, in-house, applications. A variety of technologies are used to create and build these custom applications. The Java framework has been...
on Sep 15, 2013

Tools

In the most recently completed Java.net poll, the community selected Jenkins as its preferred Continuous Integration (CI) server. This was the third in a series of Java.net polls related to Java tools. A total of 260 votes were cast in the poll. The exact question and results were: Which Continuous Integration (CI) server do you prefer? 7% (17 votes) - Bamboo 1% (2 votes) - Continuum 2% (6...
on Mar 9, 2014

Databases

The columnar storage is good, especially when there are lots of tabular fields (this is quite common). In querying, the data to traverse is far less than that on the row storage. Less data to traverse brings less I/O workloads and higher query speed. However, the Hadoop application consumes most time on the hard disk I/O without columnar storage. Both Hive and Impala support columnar storage, but...
on Jan 24, 2014
The data warehouse is essential to enterprise business intelligence, which accounts for a great part of the total enterprise cost. With the global data explosion in recent years, the business data volume grow significantly, posing a serious challenge for enterprise data warehouse to meet the diverse and complex business demands. More data, more data warehouse applications, more concurrent...
on Dec 11, 2013
In Java, implementing via SQL is a well-developed practice for database computation. However, the structured data is not only stored in the database, but also in the text, Excel, and XML files. Considering this, how to compute appropriately regarding the structured data from non-database files? This article raises 3 solutions for your reference: implement via Java API, convert to database...
on Aug 29, 2013

Performance

Every once in a while I run into someone that has a JVM that is running back to back collections and yet the heap is still almost full after each attempt! When they discover that their problem is related to the JVM not having enough memory they often ask the question, why didn't the JVM throw an OutOfMemoryError? After all my application is not making any forward progress and the reason is Java...
on Jan 8, 2014

Programming

One day I found myself in the situation that I had to write a unit test which checks whether my code is annotated in a particular way. I wondered how one could do that without doing an integration test that actually processes that annotations. My first idea was to use the Reflection API, which in fact worked, but was not looking smart. In fact, I wanted to have a Hamcrest matcher instead, since...
on Dec 27, 2013

Education

Just recently I was engaged to assist with an application that wasn’t behaving. The application, running in a 1.7.0_45 JVM, relied heavily on a 3rd party SAAS framework. That vendor provided my client with a list of 26 different JVM flags that should be set. When faced with this long list of flags I couldn’t resist asking why all the flags and why these flags. After all there are more than 700...
on Dec 11, 2013

NetBeans

Tired of JavaFX Scene Builder being run in a separate process? Fed up with no real integration between your favorite IDE and JavaFX Scene Builder? There may be a solution heading towards you. Follow this small series of blog entries to join me on my journey towards an embedded JavaFX Scene Builder in NetBeans. Finally, with the new developer preview builds of JavaFX Scene Builder 2.0 a new...
on Dec 1, 2013

IDE

If the results of the just-completed Java.net poll are at all representative of the broader Java/JVM community (our polls are not scientific, of course), the indication is that Java/JVM developers like staying pretty much up to date when it comes to their IDE. A total of 159 votes were cast in the poll, which ran for two weeks. The exact question and results were: How frequently do you...
on Nov 29, 2013

JavaOne

This is the Voice of Ground Control! NASA Ground Systems and Java Technology I am Sean Phillips and have been a software engineer for a while now.  For the last few years I've been lucky enough to be a lead developer for some NASA Ground System software that has been deployed directly into the Mission Operations Control room.  (Hence the righteous reference in the title of this blog)...
on Nov 8, 2013

J2EE

According to research, most complex report development work can be simplified by performing the data source computation in advance. For example, find out the clients who bought all products in the given list, and then present the details of these clients. In developing such reports, it is the “computation” part and not the “presentation” part that brings about major difficulties. In which stage...
on Sep 11, 2013

Blogging

The Joy of Clojure, Second Edition by Michael Fogus and Chris Houser has 4 new chapters! Save 45% with Promo code mlfogus2jn at manning.com. What's new? The authors have released the following chapters: •Chapter 14, "Data-oriented programming" •Chapter 15, "Performance" •Chapter 16, "Thinking programs" •Chapter 17, "Clojure changes the way you think" We have four new chapters for you. Chapter...
on Sep 3, 2013
Save 45% on The Programmer's Guide to Apache Thrift with Promo code mlthriftjn2 at manning.com. The Programmer's Guide to Apache Thrift by Randy Abernethy has been updated! What's new? •Chapter 1-3 have been updated and the following chapters have been added: •Chapter 4, "Handling Exceptions" •Chapter 5, "Serializing Data with Protocols" •Chapter 6, "Apache Thrift IDL" We have three new chapters...
on Aug 28, 2013
“Artifact assembly & publishing” is new to Gradle in Action + 45% off Gradle in Action by Benjamin Muschko is 45% off with Promo code mlmuschkojn at manning.com. What's new? In the context of continuous delivery, publishing your artifact plays a crucial role. Once you've packaged the delivery with a specific version, it’s ready to be deployed to various target environments for acceptance...
on Aug 27, 2013
"Using State in Actors" is new to Akka in Action + 45% off Akka in Action is written by Raymond Roestenburg, Rob Bakker, and Rob Williams Save 45% on Akka in Actionwith promo code mlakkajn at manning.com. In chapter 7, you learned about two possible ways to keep state in an Actor by using class attributes and the become/unbecome functionality. Chapter 10 talks about two more solutions that you...
on Aug 27, 2013