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Programming

I was doing some JavaFX hacking, and I had to create a sequence initially full of zeros. How can you do that? There's apparently only one way: <p>var bits = for (i in [1..64]) (0 as Long);</p> Problems: First, I need a loop - OK, a comprehension - to initialize the sequence. There is no syntax, no API helper or type constructor, that directly expresses "Long[] with N elements...
on Jun 18, 2010
by Jaisimha Narahari Date: 02/June/2010       <a name="abstract">In the month of June 2009, I did an initial post in the openjdk.java.net-jdk7-dev<br />    mailing list with a request for what I feel are two very important changes<br />    required in the Java Platform.This resulted in a thread of discussions...
on Jun 2, 2010
My previous blog, presenting the Life program, was quite long, still not really complete. I've continued the work, but soon found some interesting surprises. This new blog starts investigating an API bug, then trips into some surprising language behavior, and ends in a proposal for a small change in the JavaFX Script language. A Slider bug I was annoyed to see that the Slider control ignores my...
on May 25, 2010
There is an unwritten tradition that John Conway's Game of Life must be implemented in every programming language and every GUI toolkit. Well, OK I just invented this tradition, but it's a smart introduction and Life is one of the easiest games / cool animations you can program. But it's not too simple that we can't learn a few important things about JavaFX... My goal: a good-looking and feature-...
on May 21, 2010
On his home site, Jeff Friesen, author of 21 java.net articles, has posted an interesting little article titled Comic Books and Java. In the article, Jeff presents a Java application that reads and displays digitized comic books. In the article, Jeff explains the standard format in which comic books are digitized (a .cbz zipped file and a .cbr RAR archive file). Jeff then walks through his...
on Feb 24, 2010

GUI

I am happy to announce the release of Apache Pivot 1.5! Apache Pivot (http://pivot.apache.org) is a platform for building rich Internet applications (RIAs) in Java. It combines the enhanced productivity and usability features of a modern RIA toolkit with the robustness of the industry-standard Java platform. Pivot 1.5 includes a number of improvements intended to help improve the overall...
on Jun 8, 2010
I've finished the development of my Game of Life, with a couple final fixes and new features... including a solution to the bad performance reported before. Once again the work has uncovered some surprises; read on. Un-Scripting JavaFX Script The first version used a "scriptish" style, all code thrown in a single .fx file, only average effort in structure. Now I have three files: World....
on Jun 4, 2010
Performance: JavaFX Balls As soon as I've got JavaFX 1.3 and NetBeans 6.9-beta, first thing I did was obviously running benchmarks, and the new update delivers on its promise. Let's first check JavaFX Balls (port of Bubblemark). I've last reported results for 1.2 here; but scores for 1.2 are updated again to account for changes in my test system, remarkably the JDK (now 6u21-ea-b03). Test...
on May 3, 2010
Back in the early 80ies "of the past millenium" (As journalists call it these days - don't you feel as old as I do when reading that phrase? For me it is just "Childhood" and feels not so far ago. At least not a Millenium ago.), when I was a young boy, I teached myself BASIC programming on my father's Sinclair ZX Spectrum 48K and started coding small arcade games (what else...
on Feb 13, 2010
Lots of people have opined on Apple's iPad, many deriding it's closed nature and lack of features.  The thing is, those problems don't matter to most people. The iPad isn't for you or me. It's for everyone else. I've spent the last 20 years hoping we would have the technology to build such a device, even though I knew it was a device I would not personally use. But that doesn't matter.. Make...
on Feb 4, 2010

J2SE

In this part we will discuss the basic classes that we will work with them to have file system operations like copying a file, dealing with symbolic links, deleting a file, and so on. I will write a separate entry to introduce classes which are new to Java 7 for dealing with streams and file contents, watching service and directory tree walking. If you want to know what are new features in Java...
on Jun 1, 2010
<h1>JMath: A Java API for doing Math</h1> <p>Hello. I would like to introduce JMath project. JMath is math API for doing serious math with Java.</p> <p>With JMath you can do linear algebra, set calculations, general math calculations such as arithmetics, fractions and the like.</p> <p>Also, with JMath you will be able to do serious...
on Apr 18, 2010

Security

OpenESB project initiated by Sun Microsystems to develop and deliver a high performance, and feature rich implementation of Java Business Integration (JBI) under an open source friendly license. Basic task of JBI implementations is connecting different type of resources and applications together in a standard and none intrusive way. Basic building blocks of an ESB includes the Bus which is a...
on May 24, 2010
Spring framework is one of the biggest and the most comprehensive frameworks Java Community can utilize to cover most of the  end to end requirement of a software system when it come to implementation. Spring Security and Spring Remoting are two important parts of the framework which covers security in a descriptive way and let us have remote invocation of a spring bean methods using a local...
on Mar 18, 2010

EJB

Java EE Security refcard is available for download. This refcard covers Java EE 6 security and discuss how each application server supports the specs. The refcard covers authentication, authorization, and transport security in Web Application, EJB application and web services by introducing the concept and the related annotations and deployment descriptors which help us realize the concept....
on May 17, 2010

Community

The Book in Details: Security was, is, and will be one of the most important aspects of Enterprise Applications and one of the most challenging areas for architects, developers, and administrators. It is mandatory for Java EE application developers to secure their enterprise applications using Glassfish security features. Learn to secure Java EE artifacts (like Servlets and EJB methods),...
on May 13, 2010
For many years I am using XSLT now for a lot of tasks in both, development and runtime environments: Source generation, creating HTML from XML data, or even rendering SVG vector graphics from XML finance data. But what really bothered me was that the XSLT transformer contained in Java (even in Java 6's latest release) was just able to do XSLT 1.0 but not XSLT 2.0. XSLT (and XPath) 2.0 comes with...
on Feb 6, 2010

JavaOne

 Two talks at JavaOne this year: S313580 - "Swinglabs Dev Update" with Karl and Alex ... I hope guys will do most of the talking :D S314239 - "Building Content Management solutions based on Java Content Repository" together with Greg BTW for those wondering what is happening with the swinglabs.org, server have been recently moved around yet again. It is now in so...
on May 11, 2010

Databases

If you wonder whether the style of use with JDBC API has an impact of performance, you might like to read my latest blog entry on Head Crashing Informatics. While the entry mostly is about tuning SQL Anywhere's BLOB handling performance, it contains an interesting aspect: There are three ways to deal with BLOBs in JDBC, and the performance difference is tremendous. While obvious for the JDBC...
on Apr 10, 2010

Web Services and XML

The 2010 Vancouver Olympics web site includes a nice little JavaFX Olympics events schedule application that's quite useful for people who like following almost every Olympic sport. Actually, I suppose it's useful even if you follow only a few sports. The application shows you events that are currently in progress or which will start in the next several hours. Clicking on an event link launches...
on Feb 20, 2010