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In this post, we will see about Java 8 Stream map function. As the name suggests, it is used to map input Stream to output stream. Java 8 Stream Map function Map function returns a stream consisting of the results of applying the given function to the elements of this stream. Function is a functional interface available in Java 8 java.util.function.Function accepts one input and produce a result. Let’s understand with the help of a simple example. Java 8 Stream Map example Let’s say you have a list of employees, now you want to convert it to list of

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