How to not get into trouble writing custom reduction operation on (parallel) streams with Java 8+ (including Java 14).
Discover dead simple, improved PIT and JUnit 5 configuration in Gradle (with gradle-pitest-plugin 1.4.7+).
Have you even committed to Git using wrong email address working on/for different projects/companies? Luckily with a little configuration Git can auto-switch the identities for you.
Learn how leverage Spock 1.2 to slice a Spring context of a legacy application writing integration tests.
How to communicate with Maven Central/Nexus without using the password kept locally unencrypted (especially with Gradle, but not limited to it).