Java Captain

Nov 3, 2026 · Backend Development

Calling DLLs from Java with JNA: Step-by-Step Guide and Common Pitfalls

This article compares JNI, JNA, and JNative for calling DLLs from Java, recommends JNA for simplicity, provides Maven dependencies, complete code examples for both CDecl and StdCall calling conventions, and shares a troubleshooting tip about matching DLL and JDK bitness and using absolute paths.