ClassGraph
An ultra-fast parallelized classpath and module scanner for JVM languages that indexes class metadata without loading classes.
What is ClassGraph?
ClassGraph is an ultra-fast, parallelized classpath and module scanner for JVM languages like Java, Scala, and Kotlin. It builds a queryable graph of class metadata (classes, annotations, methods, fields) without loading the classes themselves, solving the problem of discovering and analyzing code structure at runtime or build time. It inverts the standard Java reflection API, allowing developers to find all classes that match specific criteria, such as those with certain annotations or implementing particular interfaces.
Java, Scala, and Kotlin developers who need to perform runtime or build-time code analysis, annotation processing, dependency injection, framework development, or plugin system implementation.
Developers choose ClassGraph for its exceptional speed due to parallelized scanning, its comprehensive support for both classpath and module path across JDK versions, and its powerful query capabilities that go beyond standard reflection. It is a mature, award-winning library with no dependencies and handles more edge cases in classpath specification than alternatives.
Overview
An uber-fast parallelized Java classpath scanner and module scanner.
Use Cases
Best For
Related Projects
Found a gem we're missing?
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
