If you are a MongoDB user or just interested in NoSQL databases in general, you may have seen the excellent “MongoDB has poor data durability by default!” (I am paraphrasing) conversation started by Mikeal Rogers. It is an excellent topic to bring up and regardless of Mikeal’s association (he’s a CouchDB developer) I never once [...]
Tag Archives | Java
@Override Compiler Errors in Play! Framework “Must Override a Superclass Method”
If you are working with the Play! Framework and have run into exceptions that read like “The file <MyFile>.java could not be compiled. Error raised is : The method <MethodName> of type <ClassName> must override a superclass method” then you might be wondering if there is a compiler bug in Play! – worry not, it’s [...]
Use IHeaderResponse.renderJavaScript(CharSequence,String) to Avoid Duplicates
Apace Wicket Quick Tip If you are working with multiple AjaxEventBehavior‘s (like AjaxFormSubmitBehavior and AjaxFormValidatingBehavior) on similar components in a Page and you are using IHeaderResponse.renderJavaScript(CharSequence) it’s possible you are contributing duplicate JavaScript over and over again to the header section of your Page unecessarily. As it turns out, by simply changing to use the IHeaderResponse.renderJavaScript(CharSequence,String) [...]
Apache Wicket Powers mobile.walmart.com and mobile.wellsfargo.com
Update #1: From the same development team that did the mobile.walmart.com site in Wicket also clarified that they finished (last year) the mobile.wellsfargo.com website using Wicket as well. That’s some serious props to Wicket! I am on the Apache Wicket mailing list and one of the developers (Joachim) on the list wrote in this morning to [...]
Myriad Announced Dalvik Turbo – Android Gets 3x Speedup
Engadget covered a story about the company Myriad Group AG that was showing off their “Dalvik Turbo VM” product at the Mobile World Congress. At their booth they had an OpenGL demo running on two Google Ion (HTC Magic) phones, about 1/2 the horsepower of a Nexus One. In this particular “spinning 3D box” demo, [...]
XMLStreamReader getAttributeValue Bug Returns Null
I’m documenting this issue (and fix) here for anyone else Googling for an answer. I just did for about an hour and found no answer, but instead stumbled across the solution. If you are using anything from the javax.xml.stream packages in Java 6 or later, you are using the Sun Java Streaming XML Parser (SJSXP) [...]
SmugMug Downloader Web Start Link Fixed
It looks like on Mac the Java Web Start JNLP file used to launch the SmugMug Downloader had an invalid reference to itself and was failing to load — it seems on Windows this was working anyway.
Did You Know enums Can Define Their Own Methods?
… I sure as hell didn’t, but found myself in a position the other day where I was thinking “Damn, I wish I could define a common method in this enum that I could call and not have to write another utility method…” Well, ask and ye shall receive… or something like that. Here’s the [...]
Explanations of Common Java Exceptions
Huge thanks to Marc Chung for sending along this great reference. It’s a breakdown of all the JDK exceptions and textual descriptions of what they represent — so if you are designing your own API or just working on your own app and want to make sure your use of particular exceptions (e.g. IllegalArgumentException) is [...]
JaxaFX 1.0 Released – Not a Great First User Experience
Please keep in mind I’m wearing my “Joe average user” hat that this platform is suppose to target as a delivery platform (and simplify developer’s lives in the process). I’ll admit that I’ve always had trouble with the Java plugin and Firefox on my old Windows XP SP2 desktop, Windows XP SP3 laptop and my [...]
Is Java Becoming Irrelevant?
Update #1: To clear up any confusion, this article is focused on the business value of Java – it’s ability to control and generate revenue – not it’s value as a language or a technology. So the word “irrelevant” is applied to it’s business value, not if it’s a good technology or not. Sun Microsystems [...]
Sockso Personal Music Server
If you have ever wanted to have access to your personal music collection from anywhere on the road Sockso Personal Music Server just might be the answer you were looking for. All that is required for the installation is Java and a Windows, Linux, or Mac box to run the server on. The software has [...]
Setting up Apache Tomcat 6.x and ZK in Ubuntu
Apache Tomcat is the name in JSP, and you’ll need to get a copy before being able to try out the many cool web applications and frameworks out there (like ZKoss’s ZK). Finding a development need to run JSP pages (and wanting to try out ZK), I decided to get the latest Tomcat version (6.0.18) [...]
ZK 3.5.1 Released – RIA Framework, NetBeans Plugin and Tutorial
This past week ZKoss refreshed their flagship product, ZK, to version 3.5.1. If you haven’t heard of ZK before, it is a very slick framework which was “designed to maximize enterprise operation efficiency and minimize the development cost [with] its groundbreaking Direct RIA architecture. ” Unlike most marketing ploys used to overstate the capabilities of [...]
What's the Best Way to Handle Exceptions?
It seems, given my limited experience, that handling exceptions depends entirely on the context in which you are developing. As a fan of “rules” that can be applied to different scenarios I wanted to hit you guys up and see what the rules-of-thumb were with regards to exception handling. Some approaches to exception handling sort [...]
Sun, IBM and Microsoft Host Workshop to Combine VM Efforts
Sun recently held a 3-day workshop where technical leads and directors from IBM and Microsoft were invited to join together at the Sun campus to try and work on consolidating Virtual Machine efforts going forward; more specifically focused on developing solutions that would yield Java-like performance for Ruby, Python, PHP, and Scala on the JVM. [...]
Using XRuby to Speed up Ruby Script Performance
Do you want to squeeze the most performance out of your Ruby scripts? If so, you might be interested in a little project called XRuby. According to the website “in most benchmark tests, XRuby runs faster than Ruby 1.8.5″. Personally, I was a bit skeptical, and you may be too. So let’s explore this lofty [...]
Spruce up the Desktop Java Experience with Native Objects
The DJ Project is a cool project that allows native objects to be integrated into Swing applications. You want to add a web browser to your java app? No problem. How about a flash player, or html editor? Done. The site may not look like much, but you can tell the creator has been very [...]
Tracing JavaScript Engine Coming in Firefox 3 Could Give 20-40x Performance Boost in Some Scenarios
Ars has a piece up about the Tracemonkey JavaScript engine work that we will first see in Firefox 3.1 (currently in nightlies) but is the first part of major JavaScript work known as Tamarin that won’t be seen until Firefox 4.0. Apparently the Mozilla JavaScript engine is getting worked over from the ground up with [...]
Easy Encryption in Java and Python with Keyczar
Do you need to encrypt small text data, like serial numbers or customer numbers in your web application? With the amount of data being transmitted online and the increasing need to protect customers against identity theft, encryption is the one and only choice to keep customers safe. Unfortunately, implementing encryption is a daunting task and [...]
Using 'resources' path in Wicket Causes Problems Loading CSS, Images and JavaScript
Bah… 3 hours worth of debugging and finally figured out what was going on with this issue in Wicket and wnated to share this with any other developers out there that might be running into this. Issue I typically create a /resources directory under the root of any web app I’m working on where I [...]
SmugMug Java API – Beta 5 Released
Beta 5 of the kallasoft SmugMug Java API has been released. Homepage Announcement Download The kallasoft SmugMug Java API is a Java API that provides integration with the SmugMug JSON API and is developed/released under the Apache License v2.0. The simple examples page may give you a better idea of how to use the API [...]
RedHat Pushes Up Sun Schedule, Java Fragmentation Begins
If you didn’t see it, RedHat announced earlier this week that their completely Open Source Java implementation (IcedTea) had finally passed the Java Test Compatability Kit (TCK). While most folks rejoiced, I think there were a fair number of us that sighed and thought: Goddamnit, here’s the beginning of the Java fragmentation. Or if that [...]
LinkedIn Is Written in 99% Java
This is actually pretty awesome for any of the Java devs out there that are concerned that Java is dying and Ruby/Rails/Flavor-of-the-Month is rising up to replace it… it seems that the huge professional social networking site (no, not MySpace) LinkedIn is actually written in 99% Java except for some in-memory C++ caches that they [...]
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