UnaryOperator functional interface in java8 with example | BinaryOperator in java8 with examples

Published: 03 May 2021
on channel: Why not in Tamil ?

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The implementation of Java 8 Lambda expressions required an introduction to a number of new interfaces with esoteric names that can be somewhat intimidating to developers without any experience in functional programming. One such area is the functional UnaryOperator interface.

The function of the UnaryOpertor
The function of the UnaryOperator interface is to take an object, do something with it and then return an object of the same type. That’s the unary nature of the function. One object type goes in, and the exact same type goes out.

For a more technical discussion, you can see from the UnaryOperator JavaDoc that the component extends the Function interface and defines a single method named apply.

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