Ecosystems:
Java
java-ffi-example
Example use of FFI for Java >= 22.
Print the contents of results.txt using fopen, fgets and fclose from the system libc.
Building and running
Prerequisites
Set the JAVA_HOME environment variable to the Java installation path (needs to be Java version 22 or later).
For example, for macOS + homebrew + zsh: export JAVA_HOME=/opt/homebrew/Cellar/openjdk/22.0.1/.
make is also required.
Building
make
Running
make run
The contents of results.txt will then be printed, using fopen, fgets and fclose from the system libc.
References
Inspired by:
Which in turn was inspired by:
- https://docs.oracle.com/en/java/javase/21/core/foreign-function-and-memory-api.html
- https://github.com/openjdk/jextract
- https://jdk.java.net/jextract/
- (YouTube) Foreign Function & Memory API - A (Quick) Peek Under the Hood
- (YouTube) Java 22 Launch Stream with Jorn Vernee and Per Ake Minborg
- https://news.ycombinator.com/item?id=34580907#34586552
General info
- Version: 1.0.0
- License: CC0