update at 2022-02-22 20:29:33 by ehlxr

mylib/src/lib.rs

@@ -0,0 +1,21 @@
+use jni::objects::{JClass, JString};
+use jni::sys::jstring;
+use jni::JNIEnv;
+
+#[no_mangle]
+pub extern "system" fn Java_me_ehlxr_HelloWorld_hello(
+    env: JNIEnv,
+    _class: JClass,
+    input: JString,
+) -> jstring {
+    let input: String = env
+        .get_string(input)
+        .expect("Couldn't get java string!")
+        .into();
+
+    let output = env
+        .new_string(format!("Hello, {}! from Rust...111", input))
+        .expect("Couldn't create java string!");
+
+    output.into_inner()
+}