Author: Leon van Tegelen

There are several approaches to keep a consistent look and feel for your web application. Lots of times the site will contain a navigation bar, a heading maybe a …

In several places XMLHttpRequest sprung up this week. XmlHttpRequest is a JavaScript object allowing browser clients to communicate with a server without refreshing the current page. This object originated …

Oracle’s JHeadstart team does a double whammy, not only do they release the production version of ADF JHeadstart but they announce it on their brand new weblog. As already …

Recently I ran into a bug in JDeveloper 10.1.2 or actually in the ADF Business Components version supplied with it. Calling getAttributesNames() on a viewobject resulted in a nasty …

Chris Schalk has posted a very interesting blog on web templates in JDeveloper 10.1.2 (production) and JDeveloper 10.1.3 (preview). This how-to is only published on the Chris Schalk’s blog …

Andrej Koelewijn spotted a Jason Jacobi post on OTN regarding an upcoming utility for migration of UIX pages to ADF Faces/JSP pages. The upcoming JHeadstart release will support ADF …

In a project I’m working on we have a HTML table with many columns for editing certain records. The users requested the possibility to lock the first column so …

When working on a project I like to precompile my JSPs just to test if haven’t made any (syntax) errors or forgot any resources, without having to deploy them …

For some time now there have been some excellent viewlets on OTN on the functionallity of the next generation JHeadStart version which will work with Oracle Application Development Framework …

JDeveloper release 10.1.2 is finally available for download (here). This is a maintenance release with some new features and over 1,000 bug fixes for JDeveloper 9.5.0.2.

Yesterday we had a technical session at Amis on ADF. In one discussion a concern was raised on how all the ADF metadata and the abstractionlayers would affect performance. …

The Oracle JDeveloper release 10.1.3 Developer preview release can be downloaded from OTN. See JDeveloper Homepage “The Oracle JDeveloper 10g (10.1.3) release adds many new features, including a new …

There is a simple way to use the Expression language you use in JSTL expressions in your JSP’s, in ADF’s DataAction. Actually anywhere you can get hold of a …

Every once in a while for no apparent reason a JDeveloper ADF/Struts project gets corrupted. When compiling the project I get an error that a certain class cannot be …

On OTN there is an excellent online seminar (replay) on the TopLink Object-to-XML support. This feature, which will be available in the upcoming 10.1.3 release, allows converting XML files …

During development it is sometimes necessary to able to run your webapplication under SSL. To obtain a test certificate from verisign can sometimes take a little too much time …

In one of the projects I’m involved in we have to make use of specific Oracle JDBC features. The application runs on Tomcat 5.0.27 and connects to the database …

Last year I spent a lot of time on a project using Eclipse as IDE. I like it very much. I allways call it a real developers tool. It …

Profiling makes it possible for developers to track down in what code their application spends its time. Check out this Eclipse plugin for profiling Java applications. Looks really good. …

On OTN the new Toplink 10.1.3 Developer Preview 3 can be downloaded. See here for a list all the new features . And here for the release notes . …

Today I attended an excellent online Oracle Seminar on the BPEL Process Manager by Sandor Nieuwenhuijs. I think most of the content is covered by a previous post by …

Yesterday I ran into some freaky behavior while building a web-application for Tomcat using Ant. In my build script I use the war task. I used WinZIP to check …

Some time ago I wrote a post on HTML Buttons which are accessable using keyboard shortcuts. (alt-s for a save button for example). In the solution I proposed I …

In Java code you have to use arrays a lot if you want to pass a variable number of arguments to a method. The main method is an excellent …

Knowing that I will not be the only one posting on these features in the Java Tiger release here are some observations I made while running some tests. I …

Craig McClanahan of Struts and JSF fame has started his own Blog. Let us add it to our roll..

In between sessions on Oracle Open World I visited the demogrounds. In one of the booths Duncan Mills was demonstrating Oracles ADF framework in JDeveloper 10g. IMHO the documentation …

Today I visited Oracle Open World in Amsterdam, here are some of the points I picked up. In the “Oracle Application Server 10g Technical Overview” session David Keene gave …

In HTML it is possible to define an accesskey for a control. For example if you want to have a button which the user can click using the hot-key …

Today I tried to put all my biases (I’m a j2ee developer) aside, and had a look at HTML-DB. “Oracle HTML DB is a declarative web-based application development environment …

After my post on HTML forms yesterday I was fooling around with the fieldset and label tags. Both seem quite usefull! But Internet Explorer is really quite bad at …

Allthough not earthshaking there is a nice article on the devshed about formatting HTML forms. Click here The highlights for me are the tabindex, the accesskey and the fieldset. …

If you want to see the power of Cascading Styles Sheets at work, Check out this site. It randomly generates styles to give the website a new “skin”. Just …

I was working on a Ant build file which includes a doc task generating the Javadoc for our project. Running the task from the command line worked just fine. …

For those who can not wait to try the Struts 1.2.1 beta version in combination with ADF in JDeveloper10g, Duncan Mills has posted a “how to” on OTN. click …

Last week I installed a 10g database on my laptop. I must say this was by far the easiest installation of an oracle database I ever did. One of …

Title: Pro Jakarta Commons Authors: Harshad Oak Published by: Apress Abstract This book describes in some detail all functionality in the Jakarta Commons components. Jakarta Commons actually is a …