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So, getting back to the code we were looking

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at before we configured the Maven compiler plugin,

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let's just do a quick bit of tidy up.

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Let's just say we do a stream

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here, then a filter and then .collect.

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To me that's more kind of readable here as a best

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practice because we end up with this is the method

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which has been executed in the data layer

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to get all the users.

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This is telling us that we're using the Java Extremes

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API to do some slicing and dicing of data.

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Then basically we have each intermediate operation

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underneath that on its online so that we can very

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clearly see how that pipeline has been executed.

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In this case it's just doing a filter operation to

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say filter out users that are live REGULAR_USERS.

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And then finally we have the terminal operation

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which in this case is a collect, to

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collect those elements into a set.

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So when this method here is

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executed, just get rid of RegularUsers.

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Expect that we get a set containing

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these three users here because they're RegularUsers.

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As we can see,

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now let's do a similar thing for the AdminUsers.

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So getAdminUsers same kind of

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thing, it's just this ADMIN_USER.

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So that's nice from a functional perspective since

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we've now got two methods to be able to return a

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different types of users that we have in the system.

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But we can go further with this

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which we'll do in the next videos.