Last Monday, I arrived in Linköping, Sweden. Until December, I will do my ERASMUS semester here. I’m at the Linköping University, where I will take some courses of the Computer Science Master Program. The orientation program is starting today (in about an hour) and the actual courses will start next Monday.

Eine Abbildung von Siedler von Catan in UML. Entstanden als Abschlussarbeit für einen Hochschulkurs.

I just finished a small functional interpreter for an university course. To be precise, the interpreter itself is not functional, but it understands a functional, LISP-like syntax. The whole project is written in Java 7 and provides an interface to all Java classes on the class-path, too.

I’ve recently tried to post a Spreaker Deck presentation on my Wordpress blog. But a problem using Google’s Chrome browser came up to me: Chrome throws a scripting exception when I post the embedded code.

Here’s a new presentation from me about Java Micro Performance Measuring. You can find it on Speaker Deck as you see below. Here’s the PDF version to download.

I have currently finished a paper about XForms (and XFormsMM) for an univerity course called Adaptive User Interfaces. The paper gives a general introduction to XForms as well as to XFormsMM. XFormsMM is a (quite theoretical) approach how multi-modal forms can be build on top of XForms. It’s based on a paper of Mikko Honkala and Mikko Pohja and on the idea of extending XForms with modality-dependent style-sheets.

I’m currently working on a small LISP-like language for an university course of mine. Hence, the the language is implemented in Java, I wanted to make the Java library accessible withing my language. Though loading classes, invoking methods and reading fields is just one of two ways - from Java to my language. But what about the other direction? How can I implement Java interfaces and abstract classes within my language to pass them to Java class as listeners, observers or handlers?

I have recently read a question on Stackoverflow whether there are any tools to help understanding Java code. Somebody asked it, because he started to use a pen and a sheet of paper to get the clue of some code given to him. Not uncommon.

Testing an application is hard, but testing an user interface (UI) is even harder. FEST addresses this issue for Java Swing applications. It enables you to write easy and readable functional tests for your UI. Working together with JUnit, it lets your functional UI tests feel like common unit tests within your test suite.