Replace JNR-POSIX with Java FFM API

.github/workflows/gradle.yml

@@ -18,10 +18,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up JDK 21
+      - name: Set up JDK 22
         uses: actions/setup-java@v4
         with:
-          java-version: '21'
+          java-version: '22'
           distribution: 'temurin'
 
       - name: Setup Gradle

Dockerfile

@@ -1,8 +1,8 @@
 # For instructions on building and running this Docker image,
 # please refer to docs/DOCKER.md
 
-# Use Eclipse Temurin JDK 21 as the base image
-FROM eclipse-temurin:21-jdk AS build
+# Use Eclipse Temurin JDK 22 as the base image
+FROM eclipse-temurin:22-jdk AS build
 
 # Install Maven
 RUN apt-get update && \
@@ -19,10 +19,10 @@ COPY . .
 RUN mvn clean package
 
 # Use Eclipse Temurin JDK image to run the application
-FROM eclipse-temurin:21-jdk
+FROM eclipse-temurin:22-jdk
 
 # Copy the built JAR file from the Maven container
-COPY --from=build /app/target/perlonjava-3.0.0.jar /app/perlonjava.jar
+COPY --from=build /app/target/perlonjava-5.42.0.jar /app/perlonjava.jar
 
 # Set the entry point to run the JAR file
 ENTRYPOINT ["java", "-jar", "/app/perlonjava.jar"]

QUICKSTART.md

@@ -4,7 +4,7 @@ Get PerlOnJava running in 5 minutes.
 
 ## Prerequisites
 
-- **Java Development Kit (JDK) 21 or later**
+- **Java Development Kit (JDK) 22 or later**
 - **Git** for cloning the repository
 - **Make** (optional - can use Gradle directly)
 
@@ -14,7 +14,7 @@ Check your Java version:
 ```bash
 java -version
 ```
-Should show version 21 or higher.
+Should show version 22 or higher.
 
 **Important:** Check you have the **JDK** (not just JRE):
 ```bash
@@ -26,8 +26,8 @@ Should show the same version. If `javac: command not found`, you need to install
 - Use your system's package manager, or
 - Download from a JDK provider (Adoptium, Oracle, Azul, Amazon Corretto, etc.)
 - Common package manager commands:
-  - **macOS**: `brew install openjdk@21`
-  - **Ubuntu/Debian**: `sudo apt install openjdk-21-jdk`
+  - **macOS**: `brew install openjdk@22`
+  - **Ubuntu/Debian**: `sudo apt install openjdk-22-jdk`
   - **Windows**: Use package manager like [Chocolatey](https://chocolatey.org/) or [Scoop](https://scoop.sh/)
 
 ## Installation

build.gradle

@@ -121,7 +121,7 @@ ospackage {
     packageName = 'perlonjava'
     version = project.version
     maintainer = 'Flavio Soibelmann Glock <fglock@gmail.com>'
-    // Java 21+ is required at runtime (any distribution: Oracle, Azul, Temurin, OpenJDK, etc.)
+    // Java 22+ is required at runtime (any distribution: Oracle, Azul, Temurin, OpenJDK, etc.)
 
     into '/opt/perlonjava'
     from('build/install/perlonjava') {
@@ -137,10 +137,10 @@ ospackage {
     link('/usr/local/bin/jperl', '/opt/perlonjava/bin/jperl')
 }
 
-// Java toolchain configuration - requires Java 21
+// Java toolchain configuration - requires Java 22 (for FFM API)
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(22)
     }
 }
 
@@ -159,7 +159,7 @@ dependencies {
     implementation libs.snakeyaml.engine              // YAML processing
     implementation libs.tomlj                         // TOML processing
     implementation libs.commons.csv                   // CSV processing
-    implementation libs.jnr.posix                      // Native access
+    // JNR-POSIX removed - using Java FFM API for native access (Java 22+)
 
     // Testing dependencies
     testImplementation libs.junit.jupiter.api