# Sealed goodies coming in Kotlin 1.5

DevFeed: [Sealed goodies coming in Kotlin 1.5](<https://devfeed.tech/articles/sealed-goodies-coming-in-kotlin-1-5-27082.md>)

Original publisher: [Read original article](<https://zsmb.co/sealed-goodies-coming-in-kotlin-1-5/>)

Author: Márton Braun

Published: 2021-01-19T14:00:00Z

Content type: article

Language: en

Sources: [zsmb.co](<https://devfeed.tech/sources/zsmb-co.md>)

Topics: [Kotlin](<https://devfeed.tech/topics/kotlin.md>), [interfaces](<https://devfeed.tech/topics/interfaces.md>), [Inheritance](<https://devfeed.tech/topics/inheritance.md>)

Tags: [android](<https://devfeed.tech/tags/android.md>), [classes](<https://devfeed.tech/tags/classes.md>), [inheritance](<https://devfeed.tech/tags/inheritance.md>), [interfaces](<https://devfeed.tech/tags/interfaces.md>), [kotlin](<https://devfeed.tech/tags/kotlin.md>), [marton-braun](<https://devfeed.tech/tags/marton-braun.md>), [pattern-matching](<https://devfeed.tech/tags/pattern-matching.md>), [preview](<https://devfeed.tech/tags/preview.md>), [sealed](<https://devfeed.tech/tags/sealed.md>), [sealed-classes](<https://devfeed.tech/tags/sealed-classes.md>), [zsmb](<https://devfeed.tech/tags/zsmb.md>), [zsmb-co](<https://devfeed.tech/tags/zsmb-co.md>), [zsmb13](<https://devfeed.tech/tags/zsmb13.md>), [zsmbco](<https://devfeed.tech/tags/zsmbco.md>)

## AI overview

This article explains Kotlin sealed classes and previews planned Kotlin 1.5 improvements, including relaxed inheritance restrictions and the introduction of sealed interfaces. It also discusses interoperability with newer Java sealed constructs.

## Source excerpt

Kotlin 1.5 will bring exciting new features, among them improvements to sealed classes and an introduction of sealed interfaces. Let's take a look at what that will look like!