In September I visited the conference "Herbstcampus" in Nuremberg. I took notes about some sessions, that I like to share with you. The notes are in German. SOLIDes Design - Kriterien für objektorientiertes Design by David Tanzer Wie geht's? Was geht? Wann hat es Sinn? - Portierung von COBOL-Programmen …

Groovy is a scripting language, so it is possible to run Groovy code without compiling to Java byte code. The necessary condition is that Groovy is installed on your machine. Then, running a Groovy script in a shell looks like the following line. 1groovy TestScript.groovy Now, something is wrong with the script, only …

In this post I'd like to share resources that help me learning and understanding Git. Links "Getting Git Right" tutorials Interactive Git Cheatsheet git ready Collection of tips based on use cases. Article "Git ist einfach – wenn man weiß, wie" (in German) This article describes how the data model …

Last update: 2019-11-04 I was asked some time ago, which sources I used in order to inform me about writing software documentation. This motivates me to collect all sources, that helps me, in this blog post. Most of the sources are in German. Links Arc42 Homepage: This site is about the Arc42 template. This template …

Some weeks ago I evaluated some SSH libraries for Java. The main requirements to them are file transferring and file operations on a remote machine. Therefore, it exists a network protocol based on SSH, SSH File Transfer Protocol (or SFTP). So I needed a SSH library that supports SFTP. A research shows that it exits …

Since SonarQube 4.2. the test report isn't generated by the Sonar Maven Plugin during a Maven build (see SonarQube's blog post) . Therefore, the test report has to be generated by another plugin before Sonar Maven Plugin collects the information for the SonarQube server. Here, Jacoco Maven Plugin can help. It has the …

I use Vagrant together with VirtualBox on an Ubuntu based Linux system. Because my internal SSD drive isn't so large, I outsource the location of VirtualBox's VMs to an external HDD drive with a NTFS partition. Additionally, I set Vagrant's environment variables VAGRANT_DOTFILE_PATH and VAGRANT_HOME so, that the …

Salt has the option to manage servers agentlessly. Agentless means that the targets don't need a agent process. The master orchestrates the target system over SSH. Therefor it exists an own command called _salt-shh. _ The following sections explain how to install Salt SSH on a CentOs 5.5 and how to configure minimally …

When you follow the instruction step in the installation guide for Centos 5.5, the package manager automatically installs ZeroMQ in version 2.2. This ZeroMQ version makes some troubles. Therefore, Salt recommends using ZeroMQ in version >= 3.2. There is no ZeroMQ package for this version available in the official …

From a certain point on, an application has to be configurable. Spring Framework has a nice auxiliary tool for this issue since the first version 0.9 , the class PropertyPlaceholderConfigurer and since Spring Framework 3.1 the class PropertySourcesPlaceholderConfigurer. When you start a Google search for …