--- title: Rediscovering Java ServiceLoader: Beyond Plugins and... description: ServiceLoader is Java's built-in Service Provider Interface (SPI) mechanism introduced in Java 6, enabling loose coupling through capability discovery rather... canonical: https://daily.dev/posts/rediscovering-java-serviceloader-beyond-plugins-and-into-capabilities-kyhu9wwxu twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Rediscovering Java ServiceLoader: Beyond Plugins and Into Capabilities | daily.dev og:description: ServiceLoader is Java's built-in Service Provider Interface (SPI) mechanism introduced in Java 6, enabling loose coupling through capability discovery rather... og:url: https://daily.dev/posts/rediscovering-java-serviceloader-beyond-plugins-and-into-capabilities-kyhu9wwxu og:image: https://api.daily.dev/og/posts/kYHU9WWXU.png og:image:alt: Rediscovering Java ServiceLoader: Beyond Plugins and Into Capabilities 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. # Rediscovering Java ServiceLoader: Beyond Plugins and Into Capabilities **[A Java geek](https://daily.dev/sources/frankel)** · 7 min read · 2 upvotes · 0 comments ## Summary ServiceLoader is Java's built-in Service Provider Interface (SPI) mechanism introduced in Java 6, enabling loose coupling through capability discovery rather than just plugin loading. The article explains how ServiceLoader works internally through lazy instantiation via META-INF/services configuration files, its integration with JPMS modules in Java 9+, and practical patterns for versioning and negotiation. It addresses the main limitation of requiring no-argument constructors and provides workarounds using factory patterns and proxies. The guide demonstrates Spring Boot integration using ServiceListFactoryBean and advocates using ServiceLoader at library boundaries while reserving dependency injection frameworks for application wiring. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Making ServiceLoader usable: a provider factory](https://daily.dev/posts/making-serviceloader-usable-a-provider-factory-5orx57qq7) · A Java geek · 2 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java), [#spring-boot](https://daily.dev/tags/spring-boot), [#dependency-injection](https://daily.dev/tags/dependency-injection) [View this post on daily.dev](https://daily.dev/posts/rediscovering-java-serviceloader-beyond-plugins-and-into-capabilities-kyhu9wwxu) ```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":"Rediscovering Java ServiceLoader: Beyond Plugins and Into Capabilities","url":"https://daily.dev/posts/rediscovering-java-serviceloader-beyond-plugins-and-into-capabilities-kyhu9wwxu","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/rediscovering-java-serviceloader-beyond-plugins-and-into-capabilities-kyhu9wwxu"},"datePublished":"2026-02-08T17:57:24.651Z","dateModified":"2026-02-08T17:57:49.602Z","description":"ServiceLoader is Java's built-in Service Provider Interface (SPI) mechanism introduced in Java 6, enabling loose coupling through capability discovery rather...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/cba7cf5d5603eb515266f4df39027af3?_a=AQAEunF","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/cba7cf5d5603eb515266f4df39027af3?_a=AQAEunF","isAccessibleForFree":true,"articleSection":"A Java geek","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"A Java geek","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/b7f3fdbf443347ea84705578a195085b","url":"https://daily.dev/sources/frankel"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/rediscovering-java-serviceloader-beyond-plugins-and-into-capabilities-kyhu9wwxu","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"java,spring-boot,dependency-injection","timeRequired":"PT7M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"A Java geek","item":"https://daily.dev/sources/frankel"},{"@type":"ListItem","position":3,"name":"Rediscovering Java ServiceLoader: Beyond Plugins and Into Capabilities"}]} ```