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The 5 minute fix
It was a normal day. The sun rose, birds were singing and everything seemed to be going fine until Kaboom ! A bug appeared in the live environment. Things turned downhill from there that day. But we...
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Oracle re-brands Sun certification
Oracle has decided to re-brand Sun certification under its own brand name. First the sun website redirected to Oracle.com, then the javadoc links began to look more different than ever before. Now the...
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Visualizing application errors with Simile timeline
Every developer out there has to troubleshoot a problem in PROD every now and then. The series of steps goes something like this User notices something fishy Clicks on a button that reads ‘Do not...
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Will you pay for a JVM on Mac OS X
This has been a sad week for java. One of the string of bad things happening to it, is the abandonement by Mac OS X. Among the interesting thoughts that have been thrown out there for a possible...
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Learning from design mistakes
While coming up with APIs or a framework, design forms a crucial part of the end result. While a solid design does indeed allow for flexible usage of an API, usability goes hand in hand with the...
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System.out.println performance
Any system that logs vast amounts of information, needs to think about performance. The activity of logging cannot be a synchronous blocking call that returns only when the message has been logged to...
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Using a PipedInputstream and PipedOutputstream
Every once in a while, there comes a need to convert an OutputStream into an Inputstream. The PipedInputStream and PipedOutPutstream classes allow one to achieve this. The idea behind the piped stream...
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Jettison – A JSON streaming parser that uses Stax
Jettison is a library that provides a streaming parser for the JSON data format. Reading that sentence again makes you want to compare it to Stax, the streaming parser for XML. Jettison provides...
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CodePro overview
Google recently donated a code profiling product to eclipse. A related code analytics product named CodePro is worth a look. It integrates with eclipse nicely. Lets take it for a test drive Code...
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Antlr tutorial: Hello Antlr
Domain specific languages (DSL) are great tools to communicate with non-programmers. Normally this group includes business users that would like to configure a system / rule using a fluent language...
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Java and immutability
Java is sprinkled with classes that are immutable. Wrapper classes especially make for a good example. A co-worker recently asked me “Give me an example of immutability.”. “The String class” I...
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Protobufs and other custom formats
Developers on the web increasingly deal with remote APIs. SOAP Web services / REST rest services are consumed by a myriad of consumers. What format this communication should be carried on is a matter...
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Delving deeper into Jconsole and VisualVm
Jconsole and visual VM help monitor java applications in any environment. Here are a few additional details that can help you monitor your java applications better Jconsole and permissions: Jconsole...
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Java webcam support using gstreamer
Java’s side that is not too well known would be its interface with external devices. Java can read bar codes interface with serial / parallel ports , and communicate with a web cam (JMF) Speaking of...
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Why certification related career goals hurt everyone
‘Acquire a certification in technology X‘ | ‘Earn a Domain Y certification‘ Do one of those statements list in your yearly goals ? It is almost certainly a bad idea. Let me explain why. I knew a...
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