How to configure a Maven project to use JUnit 5. How to write tests using the @Test and @ParameterizedTest annotations. How to validate test results using JUnit 5’s built-in assertion functionality.

Using a step-by-step example in Java, this article provides a practical example of how to use test-driven development (TDD) to divide, test, and conquer larger problems when coding.

Why, of course, by virtually starting up the Java class and pushing the buttons, so to speak. You test a Java class by calling methods on it from another Java class. The following Java source file is ...

The Singleton pattern is deceptively simple, even and especially for Java developers. In this classic JavaWorld article, David Geary demonstrates how Java developers implement singletons, with ...

This is a complete tutorial, discussing how to build a simple calculator app for Android. Check it out, and implement some of the recommended improvements.

Community driven content discussing all aspects of software development from DevOps to design patterns. If you’re a Java developer and you haven’t built an AWS Lambda function before, you’ll be amazed ...