This clever self-made project features a pick and place machine for rapid, largely automated microcontroller assembly with some help from the OpenPnP framework.
This deep dive into existential types in Scala will cover what problems they solve, particularly when switching from Java, and how to properly use them.
As useful as JPA is, you still run into problems when using it with Java 8's updated Date and Time API. Here's how to build an AttributeConverter and how Hibernate helps.