Mockito Made Clear
Pragmatic Bookshelf, January 2023. Stubs, mocks, and spies — and why the framework does what it does.
Help Your Boss Help You
Pragmatic Bookshelf — print August 2021, audiobook September 2022 (narrated by the author).
Kotlin Cookbook
O'Reilly Media, December 2019. A problem-focused guide to building Android apps, web applications, and more in Kotlin.
Modern Java Recipes
O'Reilly Media, September 2017. More than 70 recipes covering Java SE 8's functional features (with a look ahead at Java 9).
Gradle Recipes for Android
O'Reilly Media, July 2016. Hands-on Gradle recipes for the most common Android build tasks.
Making Java Groovy
Manning, September 2013. Blending Groovy into day-to-day work with Java.