Leveraging Lambda Expressions for Lazy Evaluation in Java

In Java, the potential of lazy evaluation is quite neglected (actually, at the language level, it's pretty much limited to the implementation of minimal evaluation). Advanced languages, like Scala, for example, differentiate between call-by-value and call-by-name calls or introduce dedicated keywords like lazy.

Although Java 8 brought an improvement on that field by providing the implementation of the lazy sequence concept (we all know it as java.util.stream.Stream), today, we'll skip that and focus on how the introduction of lambda expressions brought us a new lightweight method of leveraging delayed evaluation.

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