Rewrite object-oriented code using functional techniques. Get started with lambdas, method references, functional interfaces, and the Streams API in Java Welcome back to this two-part tutorial ...

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 ...

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I have 2 classes. Foo is a bunch of inter-related text fields, and Bar implements those fields and does all the error checking. I don't want the user leaving a text ...

What is the single responsibility principle? The single responsibility principle in Java demands that a class serves a single, clear purpose. Any attempt to add peripheral functionality to a ...

Kotlin was announced in 2011, but the first stable release, version 1.0, didn’t appear until 2016. The language is free and open source, developed by JetBrains with Andrey Breslav serving as its lead ...