Stefan Jäger – teamzone.ch

German Article: Java EE Scheduler mit skalierender Verarbeitung

Stefan Jäger — Wed, 02 Sep 2009 07:02:07 +0000

With two co-workers from Zühlke, I wrote an article about an scalable Java EE scheduler. This article got published in the JavaSpektrum magazin 04/2009.

It’s written in German and can be downloaded here.

Nice iPhone App: Wikihood

Stefan Jäger — Mon, 24 Aug 2009 15:21:08 +0000

Based on your current location, Wikihood searches for all Wiki pages around you. With Wikihood you get a free City Guide for every place in the world.

Here, Wikihood is searching all Wiki pages for your current location:

Wikihood can display the Wiki pages based on the distance, importance or rating.

One of the best views is the map view: here you can see all Wiki pages around Bern:

Eclipse Hint: Search & Replace in Files

Stefan Jäger — Wed, 19 Aug 2009 16:27:55 +0000

I always wondered, how I can search and replace in multiple files with Eclipse. I always searched for a “Search & Replace” dialog. I never found one. But a search & replace in multiple files is possible. First, just perform a usual file search (CTRL + H). All the search results gets displayed in the “Search” view. And there, it is possible to replace the searched keyword in selected or all found files. Just do a right-click.

Twitter

Stefan Jäger — Wed, 15 Jul 2009 19:38:23 +0000

I’m now on Twitter, follow me at http://twitter.com/steivan.

Eclipse 3.5 – Galileo

Stefan Jäger — Wed, 08 Jul 2009 06:26:28 +0000

On the Eclipse homepage you will find a very nice description about all new features in Galileo.

In a view of a Java developer, there are not a lot of new features. German readers will find at jaxenter a nice article with all new Java features.

The only one, which seems noteworthy, is the new toString() wizard:

Check out Cooliris on your iPhone

Stefan Jäger — Fri, 26 Jun 2009 21:08:44 +0000

Today, I found a very nice application for my iPhone. It’s called Cooliris. Cooliris is an application to search images all over the web. Just type in a search query and search on Google, YouTube, Flickr, Yahoo, DeviantART and SumgMug.

The search results are displayed in a 3D Wall. Just swipe with your finger through all the pictures.

If you’ve found a nice picture, you can zoom it and save it on your iPhone, tweet it or mail the picture to some friends.

Just try it out. It’s a small, simple, but handy application for your iPhone.

Luke – The Lucene Index Toolbox

Stefan Jäger — Sat, 13 Jun 2009 09:13:32 +0000

Lucene offers great full text search capabilities. It is based on an index, which is maintained by Lucene. With Luke, the Lucene Index Toolbox (http://www.getopt.org/luke/) you can analyze your index and let explain queries.

After startup, you have to select your index. For this example, I created a test index with one file. It’s content is “this is a lucene test”. I used the StandardAnalyzer, which uses the WhitespaceTokenizer and filters out all tokens less than 3 characters and stop words. This will result in an index of the terms “lucene” and “test”.

In the register Documents, you can browse through all documents. Because we only have one file in our test index, we can directly jump to document 0. In the “Brows by term:” panel, we can browse through all terms, which are “lucene” and “test”. Very useful, to analyze the index for a specific document.

Also very interesting is the register Search. I typed in the phrase “this is a lucene test”. In the “Query Details” panel, we can see, that the query will be “lucene test”. The reason is simple. Every query get’s also analyzed by the same analyzer, which is used for building the index.

If you are using Lucene, just try Luke out. You can start it with Java Web Start from here.

Compare different search engines

Stefan Jäger — Tue, 09 Jun 2009 08:01:09 +0000

Use http://blindsearch.fejus.com/ to compare different search engines. After you see the results, you can choose, which one is the best and you will see, which search engine (Google, Yahoo or Bing) provided which search result.

Let me google that for you

Stefan Jäger — Fri, 29 May 2009 15:06:52 +0000

There are times, where people ask you questions, which can directly be found on Google. This kind of questions are mostly boring. But hey, there is a nice solution for responding to those people:

On the website Let me google that for you you can enter any search query and send the generated link to the person, who asked you something. Perhaps, this person will learn something and will google the next question before he will ask you…

PS: just found Google ist dein Freund for the German readers.

Perform XPath queries inside Ant

Stefan Jäger — Sun, 17 May 2009 18:19:00 +0000

Ant offers some XML features like the xslt task, which transforms XML files into other files. But unfortunately, with Ant you can’t make simple XPath Queries on a specific XML file.

Luckily, there is a nice open source solution called XmlTask, which offers many possibilities to work with XML files.

Download the latest version of XmlTask from http://xmltask.sf.net
Create a task definition in Ant
Use it with the
definition

For example, read out the number of a specific node in the XML file:
```
  
```
Or change an attribute:
```
  
```

There are many other possibilites to work with XML files inside Ant. Check out the documentation at http://xmltask.sf.net.