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This is a technology blog by Matthias Friedrich, a software developer and architect. more …
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Tag Archives: java
Maven: Discovering Dependency Conflicts
Among other things, Maven’s dependency plugin displays the result of Maven’s dependency resolution mechanism. The output of the dependency:tree goal makes it easy to see where transitive dependencies come from. This week I discovered that recent versions of the plugin … Continue reading
Testing equals() with Guava
I’ve long held the opinion that Guava belongs on every Java classpath because its design and the quality of its implementation surpass other comparable utility libraries (and sometimes even the JDK). Guava’s testlib is pretty cool, too, even though it’s … Continue reading
Visualizing Package Dependencies
Managing module or package dependencies is an important design activity that helps to keep a software project maintainable. Visualizing these dependencies is a good way of getting a first impression on a project and for exposing design problems. In this … Continue reading
Maven Archetypes Updated!
Two years ago, I published a Maven archetype for Hadoop that turned out to be quite popular, judging from the comments I received and the access logs on my server. Today I’ve updated it to use the latest version of … Continue reading
Hudson vs. Jenkins Revisited
When the Hudson/Jenkins fork was announced earlier this year, the case seemed pretty clear. There were heroes from the Open Source community, among them Hudson’s original author, and there was everybody’s favorite villain, Oracle. Back in February, I would have … Continue reading
Writing Hamcrest Matchers
JUnit 4 introduced a fancy DSL based on the Hamcrest framework for expressing assertions. JUnit ships with the most important matchers and you can always add Hamcrest to your classpath if you need more. Sometimes no existing matcher fits your … Continue reading
JBoss: Running Multiple Instances on One Host
Occasionally, it’s useful to run multiple JBoss instances on one machine. Like with any network server, this is difficult because only one application can bind to a port at any given time. You have to assign different sets of ports … Continue reading
Excluding Pages From Authentication
Java’s Servlet spec allows web applications to delegate authentication and authorization to the servlet container, a mechanism known as container-based security. A lot of people use it for in-house applications or web services because it’s simple and containers like Tomcat … Continue reading
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