WEBVTT

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Hi everyone.

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Welcome back to this tutorial.

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In this tutorial, we will explore the parallel streams.

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What is a parallel stream?

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A parallel stream is something which is going to split the source data into multiple parts.

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And process them parallely and combine the result and give you the result as an output.

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That's what is called a parallel stream.

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How to create a parallel stream.

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Have an example here for a sequential stream.

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What it is doing here is that in stream dot range closed, it is going to create an empty stream of

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1000 elements and then it is going to perform a summation and return you.

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The result.

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If you do not call the parallel method explicitly, then that is a sequential stream.

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So this is an example for a parallel stream.

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What is happening here is as soon as we call the method parallel behind the scenes, what it is going

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to do, this is going to split the stream into multiple parts and process them concurrently.

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Basically, it is going to perform the summation concurrently on each and every part.

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It had split and then combine the result and give you the result as an output.

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Let's go ahead and explore this using an example.

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When to open the int.

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There you go.

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Have the open.

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We put this in full screen and in here what I'm going to do, I'm going to create a package called Parallel

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String and I'm going to create a class called Parallel stream example, parallel stream example.

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But let us make this class executable by adding public static void main.

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There you go.

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I'll put this in presentation mode.

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So I'm going to create two different methods.

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One is the.

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Some

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sequential cream.

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We are going to make this class a static one and it is going to return the result.

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Right?

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And then what the stream is going to do in stream dot range closed.

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I'm going to give the value as 100,000.

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And perform the sum.

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And we are going to return the result.

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Rate.

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Let's put the proper keyword here.

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Return keyword.

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And what I'm going to do, I'm going to create another method here.

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I'm going to name this one as some parallel string.

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Okay.

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So in here.

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I'm going to call this and check the result to find out whether both are giving us the same result or

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not.

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Going to be.

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Some parallel string and I'm going to run this example.

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You take a look at it.

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Both returned the same result.

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Right.

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But the idea is to find out which is performing better.

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Right.

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So we will explore how to check the performance of these two methods and compare which one is better

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in the next tutorial.

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With this, we came to the end of this tutorial.

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Thank you for watching.