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The new Java release train means that there will be a new release of Java every six months. And when the next release comes out, the previous release is obsolete.
In functional-style programming, functions may both receive and return other functions. Instead of a function being simply a factory or producer of an object, as in traditional object-oriented programming, it is also able to create and return another function. Functions returning functions can result in cascading lambdas, especially in highly concise code. While this syntax may look quite strange at first, it has its uses. This article will help you recognize cascading lambdas and understand their nature and purpose in code.