Java 19 Project Panama 4 Newbies
summary
Shows using OpenJDK’s Foreign Linker/Memory APIs (JEP 419/424 preview, successor to JEP 412) plus the jextract generator to replace messy JNI, claiming comparable or better performance and incremental migration. Demonstrates real builds: calling getpid/printf, allocating off‑heap via an implicit memory segment allocator, arrays and structs with offsets, and MethodHandles for C symbols. Live demos include SDL+OpenGL game window, a Swift callback, Leap Motion input, and a working FFmpeg+JavaFX video stream. Requires adding module jdk.incubator.foreign and --enable‑native‑access.
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chapters (11)
- 0:00Introduction to Project Panama
- 1:20Overcoming JNI pain points
- 4:08Panama architecture and benefits
- 7:42Demos and native interaction
- 11:34Advanced integration examples
- 17:29Setting up the environment
- 20:51Method handles and low-level access
- 25:06Using jextract for automation
- 34:09Building a hello world app
- 41:00Memory management and best practices
- 50:20Q&A and concluding thoughts
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