Sum in Java 8 – array, list and map using reduce method

In this tutorial, we will see “How to perform sum operation on arrays, list and map objects using reduce method in Java 8”

Sum of integers in Java 8 - array, list and map using reduce method...!!! Click To Tweet

Example

 

Output:

Sum of integers in Java 8 - array, list and map using reduce method...!!! Click To Tweet

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