Category Archives: Java

Automatic Proxy Selection for Mule ESB Webservices

30. March 2010 by Fabian Lange

When configuring mule, you might find out that some of your services need to call external parties. Depending on your deployment scenario there needs to be a proxy server involved. However this might change for various test stages, some need, some don’t, some need them only for specific domains and like that.
To reduce configuration overhead we have created an automatic proxy selector used for our services. Because I think its neat, I want to share it with you.
(read more…)

category: Java, Spring | no comment
This post is written on 30. March 2010 by Fabian Lange.

Simple and Fast Webservices with Mule ESB and Apache CXF

16. March 2010 by Fabian Lange

In this blog post, I want to show you how we at codecentric are using Mule ESB and Apache CXF in our projects to create webservices very easily, and what you can do to make them faster, because they are pretty slow out of the box.
So why a webservice at all? This is a good question, and perhaps the most critical for performance. Webservices are good if you want to make your Interface or Service public, or want to use them internally where other transports (like RMI) are not available, either due to firewall configuration or cross programming language environments. People struggling with a good setup might often not be able to change this at all, so lets take it for granted.
(read more…)

category: General, Java, Performance | 2 Comments so far
This post is written on 16. March 2010 by Fabian Lange.

Java Specialist Master Course Field Report

9. March 2010 by Fabian Lange

Last week I had the pleasure attended Heinz Kabutz Java Specialists Master course to sharpen my Java skills. Java Champion Heinz, is a great trainer who manages to combine anecdotes, hard facts and deep Java knowledge with engaging exercises to a well done course. The scope was the whole spectrum of Java, but focusing on the details you normally do not use, or know how to use. Some of the material he already published as part of his newsletters, which are read all around the world.

Let me share my impressions on the course with you in this day by day review…
(read more…)

category: General, Java, meet the experts | 5 Comments so far
This post is written on 9. March 2010 by Fabian Lange.

Looking forward to the Java Specialist Master Course

22. February 2010 by Fabian Lange

I will be attending the course by Dr. Heinz Kabutz next week from 2nd-5th of March in Düsseldorf.

I have pretty high expectations, as I already read his newsletter since quite some time and also my impressions of Heinz, when he gave his talk at our meet the experts, were very positive. He really knows all the nasty details about Java, and I hope I can get some of those out of his and into my brain. The course promises “Extreme Java”. I am looking forward to very esotheric subtleties without any practical value. And of course to many caveates that you indeed would find in everyday work.

I am also looking forward to meeting other Java geeks to exchange knowledge and have a good week. Will you be there?

(note that the course is in German)

category: Java | no comment
This post is written on 22. February 2010 by Fabian Lange.

Timeout is not equal timeout

25. January 2010 by Eugen Melnichuk

Last week I had to change a webservice-client in such a way as to be able to configure a timeout. The webservice is implemented with spring-webservices and uses the WebServiceTemplate class. (read more…)

category: Java | no comment
This post is written on 25. January 2010 by Eugen Melnichuk.

The Java Memory Architecture (1. Act)

6. January 2010 by Mirko Novakovic

One of the biggest strength of the Java Platform is the implementation of an automatic memory management in the Java Virtual Maschine. Everybody who has programmed with languages like C/C++ knows about the problems of managing memory allocation and deallocation in the code. With Java problems like deallocating memory too early (corrupted pointer) or too late (memory leak) cannot occur by specification. The question is: Why am I writing these blog entries?

The problem is that even with an implicit memory management integrated, Java cannot prevent application of being corrupt in sense of memory management, even it is not allowed to explicitly allocate memory in Java. The result of such wrongly programmed code normally is an exception of type: java.lang.OutOfMemoryError.

(read more…)