Community driven content discussing all aspects of software development from DevOps to design patterns. The implementation of Java 8 Lambda expressions required an introduction to a number of new ...

Method references are a shorthand way to write lambda expressions that call a single method. Rather than implementing a method in a functional interface, a method reference simply points to an ...

If you are a tester, you have probably heard about Behaviour-Driven Development, or BDD in short, and the debates around what it is, and how and what it should be used for. Regardless of what we think ...

Resilience4j is a lightweight fault tolerance library designed for functional programming. Resilience4j provides higher-order functions (decorators) to enhance any functional interface, lambda ...

A callback operation in Java is one function that is passed to another function and executed after some action is completed. A callback can be executed either synchronously or asynchronously. In the ...

This code should throw an IndexOutOfBoundsException. There are multiple ways in JUnit to write a test to verify this behavior. The method assertThrows has been added to the Assert class in version ...