# Kotlin and Android Development featuring Jetpack: Not clear in which package data classes should belong (version B4.0 page 126)

**URL:** <https://forum.devtalk.com/t/kotlin-and-android-development-featuring-jetpack-not-clear-in-which-package-data-classes-should-belong-version-b4-0-page-126/6758>\
**Category:** PragProg Customers\
**Tags:** book-kotlin-and-android-development-featuring-jetpack, suggestion\
**Created:** [7 February 2021 13:08 UTC](https://forum.devtalk.com/t/kotlin-and-android-development-featuring-jetpack-not-clear-in-which-package-data-classes-should-belong-version-b4-0-page-126/6758 "2021-02-07T13:08:26Z")\
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**Author:** ![mfazio23](https://forum.devtalk.com/user_avatar/forum.devtalk.com/mfazio23/32/528_2.png) [@mfazio23](https://forum.devtalk.com/u/mfazio23)\
**Post date:** [8 February 2021 00:25 UTC](https://forum.devtalk.com/t/kotlin-and-android-development-featuring-jetpack-not-clear-in-which-package-data-classes-should-belong-version-b4-0-page-126/6758/2 "2021-02-08T00:25:52Z")

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Welcome back! I’m glad you asked for clarification. The new `Entity` classes will go in the `data` package but we can just leave `Player` in the `types` package.

I added a note in chapter 5 about how all the new `Entity` classes go in `data`, hopefully that’ll be more clear.

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