feat: add java&rust

README.md

@@ -85,6 +85,7 @@ Project or files:
 │   └── svg
 ├── __lang
 │   ├── boa
+│   ├── java
 │   ├── monkey-rs
 │   ├── peg
 │   ├── pest
@@ -241,6 +242,6 @@ Project or files:
     ├── vec.rs
     └── while.rs
 
-210 directories, 37 files
+211 directories, 37 files
 ```
 

__lang/java/README.md

@@ -0,0 +1,6 @@
+
+* https://rustcc.cn/article?id=4ca84a67-d972-4460-912e-a297ec5edc0a
+* https://github.com/metaworm/rust-java-demo
+
+
+

__lang/java/java-demo/README.md

@@ -0,0 +1,6 @@
+
+```shell
+mvn clean package
+java -Djava.library.path=../java-rust-demo/target/debug/ -jar target/RustJNI-1.0-SNAPSHOT.jar 
+```
+

__lang/java/java-demo/java/me/hatter/RustJNI.java

@@ -0,0 +1,14 @@
+package me.hatter;
+
+public class RustJNI {
+    static {
+        System.loadLibrary("java_rust_demo");
+    }
+
+    public static void main(String[] args) {
+        init();
+    }
+
+    static native void init();
+}
+

__lang/java/java-demo/pom.xml

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>me.hatter</groupId>
+    <artifactId>RustJNI</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <exec.mainClass>me.hatter.RustJNI</exec.mainClass>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
+    </properties>
+
+    <dependencies>
+    </dependencies>
+
+    <build>
+        <sourceDirectory>java</sourceDirectory>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>2.4</version>
+                <configuration>
+                    <encoding>UTF-8</encoding>
+                </configuration>
+            </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>2.4</version>
+        <configuration>
+          <archive>
+            <manifest>
+              <addClasspath>true</addClasspath>
+              <mainClass>me.hatter.RustJNI</mainClass>
+            </manifest>
+          </archive>
+        </configuration>
+      </plugin>
+        </plugins>
+    </build>
+</project>

__lang/java/java-rust-demo/Cargo.lock

@@ -0,0 +1,179 @@
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+# It is not intended for manual editing.
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+
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__lang/java/java-rust-demo/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "java-rust-demo"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ['cdylib']
+
+[dependencies]
+jni = {version = '0.19'}
+

__lang/java/java-rust-demo/src/lib.rs

@@ -0,0 +1,7 @@
+use jni::objects::*;
+use jni::JNIEnv;
+
+#[no_mangle]
+pub unsafe extern "C" fn Java_me_hatter_RustJNI_init(_env: JNIEnv, _class: JClass) {
+    println!("rust-java-demo inited");
+}