Recent Posts by Geertjan Wielenga

A few days ago I received a message congratulating me for my employment anniversary of 10 years of service to Oracle. Together with a picture of the commemorative award: It's great that my pre-Oracle years were included, i.e., I have only worked for Oracle for 4 years, since the Oracle/Sun takeover. I also like the thought that even when I wasn't working for Oracle, I was somehow still working for Oracle, in anticipation of the time when my secret work for Oracle would be...

NetBeans IDE 8 has been out a few months now, released together with Java 8. Its focus is tools for refactoring to Java 8 (e.g., batch refactoring to lambda expressions), tools for working with embedded devices like the Raspberry Pi, and tools for HTML5 development (such as features for AngularJS, Knockout, Apache Cordova, Grunt, Karma, browser integration, etc etc). If you've been using NetBeans IDE 8, what do you think about it? The NetBeans team would LOVE to know -- a lot...

Here we have a simple application in Maven. It has a GUI that uses ServiceLoader.load to process a text, using two SPI implementations, one for converting the input to uppercase, the other to lowercase. The GUI module has a Main class that prints output to System.out. The Maven modules are contained in a Maven reactor module named "WordProcessor". Here is a ZIP containing the above app. Our task is to migrate this application to the NetBeans Platform. The nice thing about...

So you're creating your awesome application on the NetBeans Platform... But... you want the toolbars to be floatable.  Notice that above there are now suddenly new 'floatable' markers to the left of each toolbar, indicating that you can drag the toolbar out of the toolbar container, as has been done for two toolbars here: Here's how: import org.openide.awt.Toolbar; import org.openide.awt.ToolbarPool; import org.openide.windows.OnShowing; @OnShowingpublic class Startable...

OK, let's now port the RESTful web service client created yesterday to the NetBeans Platform. Create a new NetBeans Platform application and create within it a new module. Next, create a new TopComponent via the New Window Component wizard. Then go to the Project Properties dialog of the module. In Libraries | Wrapped JARs, include the JARs shown below. Some of the JARs above come from the New Window Component wizard, i.e., the Window System API JAR and Nodes API JAR,...

Here's a small snippet that's useful for hooking into the generated code for creating RESTful web service clients in NetBeans IDE. I.e., you start by exposing the database via RESTful web services, then you create a RESTful web service client, which gives you a new Java class with a bunch of methods for interacting with the web services. Now, how do you print out all the, for example, customers via your RESTful web service client? Here's how,...

I've been plagued with this error over the past few days: Exception in thread "main" org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyReader not found for media type=application/json, type=class com.mycompany.customerclientmaven.Customer, genericType=class com.mycompany.customerclientmaven.Customer.   ...

The Open Source Development Center in Belgrade, Serbia, recently presented the current state of their work on UML tooling for NetBeans IDE. Below you see Milan Djoric showing a pretty complex looking UML graph which he generated from a Java application. Indeed, reverse engineering of UML graphs is supported, as well as tools for creating UML graphs from scratch. Together with Ilija Ivanovic, who also presented during the session above, as well as Stefan Petrovic, the team is...

I recently attended a presentation where Milos Randjic demonstrated JMonkeyEngine SDK visualization within Neuroph, together with Tihomir Radosvljavic, who is working on the development of an AI Engine that will be used to integrate Neuroph and JMonkeyEngine SDK. Both Milos and Tihomir are working with Zoran Sevarac (Duke's Choice Award Winner, Java Champion, NetBeans Dream Team member) at the Open Source Development Center at the University of Belgrade in Serbia. To give an...