--- title: Introducing Layrry: A Launcher and API for Modularized... description: Layrry is an open-source launcher and Java API for running modularized Java applications using module layers. It addresses key limitations of the Java Module... canonical: https://daily.dev/posts/introducing-layrry-a-launcher-and-api-for-modularized-java-applications-dpedj1tct twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Introducing Layrry: A Launcher and API for Modularized Java Applications | daily.dev og:description: Layrry is an open-source launcher and Java API for running modularized Java applications using module layers. It addresses key limitations of the Java Module... og:url: https://daily.dev/posts/introducing-layrry-a-launcher-and-api-for-modularized-java-applications-dpedj1tct og:image: https://api.daily.dev/og/posts/DPEDJ1tCT.png og:image:alt: Introducing Layrry: A Launcher and API for Modularized Java Applications 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. # Introducing Layrry: A Launcher and API for Modularized Java Applications **[Gunnar Morling](https://daily.dev/sources/gunnar-morling)** · 7 min read · 0 upvotes · 0 comments ## Summary Layrry is an open-source launcher and Java API for running modularized Java applications using module layers. It addresses key limitations of the Java Module System: no built-in mapping between module names and JARs, no remote repository resolution, and no support for multiple versions of the same module on a flat module path. Layrry lets developers declare application layers in a YAML file using Maven GAV coordinates, automatically downloads the required JARs, and executes the application with proper layer isolation—enabling multiple versions of the same module to coexist in different layers. A programmatic Java API is also provided for dynamic layer assembly and plugin architectures. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [foojay – a place for friends of OpenJDK](https://daily.dev/posts/foojay-a-place-for-friends-of-openjdk-vke1bkzad) · Foojay.io · 0 upvotes · 0 comments - [Test your LLM apps like the rest of your Java code](https://daily.dev/posts/test-your-llm-apps-like-the-rest-of-your-java-code-hzgz5uwda) · Awesome Java Newsletter · 1 upvotes · 0 comments - [Java\+LLMs: A hands-on guide to building LLM Apps in Java](https://daily.dev/posts/java-llms-a-hands-on-guide-to-building-llm-apps-in-java-fqwk6wrd9) · Shaaf · 2 upvotes · 0 comments - [Migrating to Modular Monolith using Spring Modulith and IntelliJ IDEA](https://daily.dev/posts/migrating-to-modular-monolith-using-spring-modulith-and-intellij-idea-y9bgxobrn) · JetBrains · 0 upvotes · 0 comments - [Leave the Class Path in the Rearview Mirror](https://daily.dev/posts/leave-the-class-path-in-the-rearview-mirror-csmdgtjdc) · Medium · 1 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java), [#maven](https://daily.dev/tags/maven) [View this post on daily.dev](https://daily.dev/posts/introducing-layrry-a-launcher-and-api-for-modularized-java-applications-dpedj1tct) ```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":"Introducing Layrry: A Launcher and API for Modularized Java Applications","url":"https://daily.dev/posts/introducing-layrry-a-launcher-and-api-for-modularized-java-applications-dpedj1tct","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/introducing-layrry-a-launcher-and-api-for-modularized-java-applications-dpedj1tct"},"datePublished":"2026-03-16T08:14:10.025Z","dateModified":"2026-03-16T08:26:18.252Z","description":"Layrry is an open-source launcher and Java API for running modularized Java applications using module layers. 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