Using the JPA (Java Persistence API) 2.0 with Hibernate for a database integration test against a in-memory db like H2 or HSQLDB, is a good way to test the JPA ORM (object relational mapping). In the process, errors might occur depending on the database vendor. Following example illustrate a problem with Hibernate and HSQLDB.
The Logitech Wireless Presenter R400 is not working properly under Ubuntu 14.04. This post provides a solution, how to get the presenter working properly.
Existing (private) ssh keys may have a password. If you want to alter the password, the ssh-keygen command will reassign the pass phrase to the existing private key.
The patch command is a feature that was added in JBoss EAP 6.2. Following post demonstrates the patching process.
A fresh JBoss EAP installation, has no web console activated. It requires a management user for that. This article explains the basic steps how to activate the management web console.
This article describes SSD caching for the HDD drive on a new Ubuntu Linux installation. The contents might as well apply to Debian Jessie.
ExpressCache enables systems with a mSATA SSD device as a cache for the harddisk on Windows.
Google Charts is a Java Script library that offers you to visualize data as charts. Through GWT (Google Web Toolkit) it is accessible in Java. It is also accessible via Flash. For any data e.g. metrics, org-charts or other statistical stuff.