Parallel Stream

Until now, we have only been looking at serial Stream. However, Java 8 introduced the concepts of the parallel stream and parallel processing. As we have a greater number of CPU cores nowadays, due to cheap hardware costs, parallel processing can be used to perform operation faster.

Creating a parallel stream

There are two ways in which we can create a parallel Stream:

• Using the parallelStream() method.
• Or, if we already have a stream, we can use the parallel() method to convert it into a parallel stream.

Let us look at an example of a parallel stream.