LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.
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This is the new home of the original DDD Sample app (previously hosted at sf.net)..
A library that makes working with Bluetooth LE on Android a pleasure. Seriously.
P6Spy is a framework that enables database data to be seamlessly intercepted and logged with no code changes to the application.
- p6spy
- java
- jdbc
- jdbc-logging
TileView is a subclass of android.view.ViewGroup that asynchronously displays, pans and zooms tile-based images. Plugins are available for features like markers, hotspots, and path drawing.
- android
- android-library
- tileview
- tiling
jHiccup is a non-intrusive instrumentation tool that logs and records platform "hiccups" - including the JVM stalls that often happen when Java applications are executed and/or any OS or hardware platform noise that may cause the running application to not be continuously runnable.
Java XML library. A really cool one. Obviously.
Send push notifications asynchronously in your vertx application with OneSignal.
- vertx
- onesignal
- onesignal-notifications
- java
Vertx-MongoDB-Effect enables interaction with MongoDB in a purely functional and reactive style, seamlessly integrating with Vertx-effect. This library requires familiarity with Vertx-effect, as both frameworks share a foundational reliance on immutability and persistent data structures provided by json-values.
- functional-programming
- javascript
- json-values
- mongodb