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Strange, our production code is full of streams and lambdas. It probably depends on the type of product.

I work for a large company and the code base is full of streams and lambdas. Streams are almost used too much and could be replaced with a simple for-loop.

Yeah, stream overuse is definitely an issue at our company.

I started using Streams and lambdas immediately, along with functional interfaces. Java is still not nearly as pleasant as Scala or Clojure, however.

Chromium (and so Chrome too) uses lambdas in its Java parts.

Last time I used java, I used it extensivelly lambda, collection map and flatmap, optinnals... But old school javaist barely used them though.

We start using new features pretty much as soon as the new JDK version is released to general use.

I started using them ASAP.