Java Parallel Streams: Boost Your Stream API Performance

Parallel streams in Java are a feature introduced in Java 8 as part of the Stream API. They enable you to perform operations on collections in parallel, automatically leveraging the available processor cores. By invoking the parallelStream() method on a collection, you create a parallel stream that can perform operations like filter, map, and reduce concurrently, improving the performance of data processing tasks.

In this example, we demonstrate the usage of parallel streams to calculate the sum of squares of a list of integers. We first create a list of integers and then call the parallelStream() method on the list to create a parallel stream. We use the map operation to calculate the square of each integer and then apply the reduce operation to compute the sum of squares. By using a parallel stream, the operations are executed concurrently, improving the performance for large datasets.