Integrating Clojure Code in Java Applications

Some teams adopt Clojure by embedding it inside an existing Java application: keep the JVM, keep the deployment pipeline, and introduce Clojure where it reduces complexity.

The safest model is “library boundary”:

• expose a small set of Clojure functions as your public API
• keep most Clojure code pure and data-oriented
• call into it from Java through a thin adapter (load the namespace, resolve a var, invoke it)

This section focuses on boundary design so you get the benefits of Clojure without turning your Java codebase into a dynamic, hard-to-debug mix of runtime loading and evaluation.

In this section

• Compiling Clojure Code for Java Use: A Comprehensive Guide
  Learn how to compile Clojure code into Java bytecode, including Ahead-of-Time (AOT) compilation, and package it into JAR files for seamless integration with Java applications.
• Invoking Clojure Functions from Java: A Comprehensive Guide
  Learn how to seamlessly call Clojure functions from Java, leveraging compiled classes and the Clojure Java API for dynamic invocation.
• Managing Classpaths and Dependencies in Clojure and Java Integration
  Learn how to effectively manage classpaths and dependencies when integrating Clojure and Java codebases, ensuring seamless interoperability and efficient development.