Category Archives: Software Development

Exception Handling – The Catch Block should go Last

I have just stumbled across a piece of code like this: Object getSomeValue() { Object value = null; try { value = errorProneOperation(); } catch (IOException e) { throw new IllegalStateException(e); } return value; } Now I find this really … Continue reading

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JSON Builder – Fun with Generics

On the train back to Berlin I spiked a little fluent Json Builder in Java. Here is one of my acceptance tests: JsonBuilder builder = new JsonBuilder<NULL>() .addObject("name") .addProperty("first", "Holden") .addProperty("last", "Caulfield") .end() .addArray("contact") .addPrimitive("00447903217666") .addObject() .addProperty("street", "5 Mayton St") … Continue reading

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Processing large XML files with Shell Scripts

I recently did some work around analysing xml files for data imports. This kind of task is usually well suited for taco bell programming. Now xml is not easily manipulated with standard unix utilities, so I looked for a way … Continue reading

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Reading the Classics – The CLU Reference Manual

Last year I started reading or rereading some of the classical texts in computer science. The first one was the CLU Reference Manual by Prof. Liskov et al. The book and the language were conceived in the seventies. CLU is … Continue reading

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Java Lib to Launch External Processes

I recently redesigned some of the code I tend to use to spawn external processes (pdflatex anyone?) in java. The implementation is still a bit buggy, but I am more interested in people’s opinions about the API (non-blocking killable invocations … Continue reading

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Join

Note to self: join works only on sorted text files.

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Thoughts on handling Translations and Views on Source Code

One of my recent java projects was to be used by users with three different languages. We went with the standard java approach of using properties files for messages. In intellij there is decent tool support for that. However it … Continue reading

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Don’t Play with Yourself

Some two years ago I had the pleasure of working with a code base that relied heavily on the spring SimpleForm framework. The thing I didn’t like about this framework was the whole controller class hierarchy. Essentially there is about … Continue reading

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Getting Real with Enumerable.java

Two weeks back I posted a video explaining how to get started with Enumerable.java. While this might have been enough information to start playing, there is a lot more to consider when going with Enumerable.java for production use. Over the … Continue reading

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Get Closures for Java Now!

The general state of affairs at Sun/ Oracle is very sad. If you are like me, you cannot take this much longer. Fortunately enough my esteemed colleague Håkan Råberg has invented what is at least a molotov cocktail perhaps even … Continue reading

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