Java—originally developed at Sun Microsystems, which then merged into Oracle Corporation—is one of the most popular programming languages in use, particularly for client-server web applications. In particular, PDI and the whole Pentaho platform have been developed using Java as the core language.
It was to be expected that eventually, a step would appear that allows you to code Java inside PDI. This step is User Defined Java Class, which we will call UDJC or Java Class step for short. The goal of this step is to allow you to define methods and logic using Java but also to provide a way of executing pieces of code as fast as possible. Also, one of the purposes of this step, when it was created, was to overcome ...
