Learn about the Radix sort algorithm and implement it in Java.
Here's what I've written (so far):
JUnit 5 allows us to customise the lifecycle of our test objects to share resources and state between tests. We investigate the @TestInstance annotation.
Learn how to configure a JPA entity for more than one primary key column, diving into the tradeoffs between @EmbeddedId and @IdClass.
Learn how to define entities and customize them using the Java Persistence API.