--- title: Episode 47 “Carrier Classes” [IJN] – Inside.java | daily.dev description: Project Amber lead Brian Goetz outlines plans to introduce carrier classes to Java, a generalization of records for improved data handling. Carrier classes... canonical: https://daily.dev/posts/episode-47-carrier-classes-ijn-inside-java-kvgbwofxw twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Episode 47 “Carrier Classes” [IJN] – Inside.java | daily.dev og:description: Project Amber lead Brian Goetz outlines plans to introduce carrier classes to Java, a generalization of records for improved data handling. Carrier classes... og:url: https://daily.dev/posts/episode-47-carrier-classes-ijn-inside-java-kvgbwofxw og:image: https://api.daily.dev/og/posts/kVgBWOfxW.png og:image:alt: Episode 47 “Carrier Classes” [IJN] – Inside.java og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Episode 47 “Carrier Classes” [IJN] – Inside.java **[Inside Java](https://daily.dev/sources/inside_java)** · 2 min read · 0 upvotes · 0 comments ## Summary Project Amber lead Brian Goetz outlines plans to introduce carrier classes to Java, a generalization of records for improved data handling. Carrier classes define their external API through a component list (accessors, constructor, deconstructor) enabling pattern matching and reconstruction, but leave implementation to the developer. Unlike records, they can be non-final (supporting inheritance) and mutable. The episode also covers carrier interfaces for abstract records, relaxed deconstruction patterns for type evolution, and Gavin Bierman's proposals for pattern assignments and constant patterns. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Episode 52 “Carrier Classes & Discussing Syntax” \[AtA\] – Inside.java](https://daily.dev/posts/episode-52-carrier-classes-discussing-syntax-ata-inside-java-wuj5f7lfk) · Inside Java · 0 upvotes · 0 comments - [Java Explores Carrier Classes to Extend Data-Oriented Programming Beyond Records](https://daily.dev/posts/java-explores-carrier-classes-to-extend-data-oriented-programming-beyond-records-kkijokcm5) · InfoQ · 0 upvotes · 0 comments - [Java Weekly, Issue 632](https://daily.dev/posts/java-weekly-issue-632-sqogw6ugs) · Baeldung · 0 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java) [View this post on daily.dev](https://daily.dev/posts/episode-47-carrier-classes-ijn-inside-java-kvgbwofxw) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Episode 47 “Carrier Classes” [IJN] – Inside.java","url":"https://daily.dev/posts/episode-47-carrier-classes-ijn-inside-java-kvgbwofxw","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/episode-47-carrier-classes-ijn-inside-java-kvgbwofxw"},"datePublished":"2026-02-23T14:14:47.699Z","dateModified":"2026-02-23T14:15:08.180Z","description":"Project Amber lead Brian Goetz outlines plans to introduce carrier classes to Java, a generalization of records for improved data handling. 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