Add speaker notes to JNI slide (#2495)

Part of #1083.
2025-03-20 22:36:03 +02:00 · 2024-12-05 12:30:03 -05:00 · 2024-12-05 12:30:03 -05:00 · 54e0eab236
commit 54e0eab236
parent 69d4fc13a4
1 changed files with 11 additions and 0 deletions
--- a/src/android/interoperability/java.md
+++ b/src/android/interoperability/java.md
@ -38,3 +38,14 @@ Finally, you can build, sync, and run the binary:
 ```shell
 {{#include ../build_all.sh:helloworld_jni}}
 ```
+
+<details>
+
+- The `unsafe(no_mangle)` attribute instructs Rust to emit the
+  `Java_HelloWorld_hello` symbol exactly as written. This is important so that
+  Java can recognize the symbol as a `hello` method on the `HelloWorld` class.
+
+  - By default, Rust will mangle (rename) symbols so that a binary can link in
+    two versions of the same Rust crate.
+
+</details>