Recent Posts by Geertjan Wielenga

SaveCookie (Part 1) worked but wasn't very efficient, because we were passing a field around, i.e., a boolean that was set whenever a text field was modified. Plus, we could have used getCookieSet().assign to assign our implementation of SaveCookie to the cookie set. So, here's the new and improved save functionality for a text field in a TopComponent, with help from Jarda to create it. As before, we begin by creating a node in the TopComponent. private class DummyNode...

I wanted to understand the relationships between the classes of the JURPE demo's wizard package. So, I installed the UML plugin into 6.0 RC 1. I thought that maybe because the demo is an Ant project, the UML support would not apply to the project. But I was wrong. Two clicks later, I had the complete dependency graph generated for me: Hurray for UML in NetBeans IDE.

Around 50 students from various universities in Austria came to see us at Sun in Prague on Thursday. The students are visiting a range of companies (e.g., Siemens and Skoda too) all over the place, it seems. We did presentations on Sun, OpenSolaris, NetBeans IDE, and GlassFish. Here's a pic that shows the general setting, with Petr Jiricka opening the day with a presentation about Sun: I had the honor of introducing NetBeans IDE and here is my presentation. I really stressed...

Let's switch on the Save button (and the related Save menu item under File menu) for a text field. First, we need to listen to changes in the text field and then set a boolean on the change: private boolean change = false;myTextField.getDocument().addDocumentListener(new DocumentListener() { public void insertUpdate(DocumentEvent arg0) { change = true; } public void removeUpdate(DocumentEvent arg0) { change = true; } public void...

The sample that illustrates a use case of JURPE, the Java Universal Role Playing Engine, is moving to the NetBeans Platform. Here's "before", i.e., the sample as a standard Swing application: ...and here's "after" (well, actually, "during", since it is incomplete): Does someone want to help with this project? Ah, the things you will learn... the mountains you will climb... the praise that will be bestowed upon you... Let me know if you're interested!

It's been a few months since the release of Chet Haase and Romain Guy's "Filthy Rich Clients: Developing Animated and Graphical Effects for Desktop Java Applications". The cover of my copy of the book is bent and buckled, the edges of the pages are frayed, bread crumbs and chocolate smears have enriched its pages, and there are multiple bookmarks peeking out at various angles... perhaps the time has come to pass judgement on its content. First of all, let's look at who, in my...

One of the people Jarda and I met last week at the Johannes Kepler University in Linz, Austria, during the NetBeans Certified Engineering course, was Christian Wimmer, who is the developer behind the open sourced Java HotSpot Client Compiler Visualizer. The tool, created on top of the NetBeans Platform, visualizes the internal data structures of the Java HotSpot client compiler (also called C1), which is a just-in-time compiler inside the Java HotSpot VM that translates...

Gpp is Groovy's Ant pre processor tool. I'm using its GppCopy task to replace instances of ${ant.something} with real header content. In the end, I'm using it to replace variables in HTML files with conditional content defined as Ant properties, which is all based on how Velocity does it. So, I have <h1>${ant.header}</h1> in my original HTML file, which becomes <h1>my customized header</h1> via the Ant scripts below: <project name="Groovy Processor" default="all"...

After the NetBeans Certified Engineering course (see yesterday's blog entry), we went snowboading, taking advantage of being in Austria already. Schladming (Planai) is where we ended up. As an indication of how much it snowed, this was Jarda's car, after leaving it parked for one night: It was the first time I had ever stood on a snowboard, so even being able to stand up at all was a great achievement, as indicated here: Occasionally I even made some progress down the...