Native Code, Off-Heap Data and Java

on YouTube ↗01h 01m

" summary

Covers how Java programs interact with native code and manage off-heap data, describing the existing techniques and their difficulties. Explains JDK 9 additions (VarHandles, JEP 193) and planned Project Panama features: a new foreign-function interface to replace JNI (JEP 191), a layout descriptor language (LDL), and Arrays 2.0.

AI-written summary · about

" chapters (9)

1. 0:00Introduction
2. 2:27JNI overview and limits
3. 10:14JNI pros and cons
4. 19:14JNR for native code
5. 26:13Project Panama overview
6. 34:34Data layout and access
7. 44:21Off-heap data handling
8. 55:08VarHandles in Java 9
9. 59:53Summary and Q&A

" related talks

• 01h 01mJava Enable Preview: Foreign Function and Memory InterfaceDaniel Hinojosa · Great International Developer Summit 2025
• 01h 04mProject Panama Unleashing Native LibrariesTobi Ajila · Devnexus 2025
• 55mBare metal JavaJarosław Pałka · GeeCON 2023
• 55mJava 19 Project Panama 4 NewbiesCarl Dea · Devnexus 2022
• 49mThe future is nativeDan Heidinga · JVM Language Summit 2015
• 16mForeign Function and Memory APIPer Minborg · Jfokus 2023
• 47mInterconnecting Java and Native Code with the FFM APIPer Minborg · JavaOne 2025
• 29mEasily Leverage Native Functions with Project Panama from JavaBrice Dutheil · Devoxx France 2022