Update maven.yml

Author: andreasrosdal

.github/workflows/maven.yml

@@ -1,24 +1,31 @@
-# This workflow will build a Java project with Maven
-# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+name: OpenPDF Maven Build
 
-name: OpenPDF maven build
-on: [ push, pull_request ]
+on: [push, pull_request]
 
 permissions:
   contents: read
 
 jobs:
   build:
     runs-on: ubuntu-latest
-    name: Build with Java 17
+    strategy:
+      matrix:
+        java: [17, 21, 24]
+    name: Build with Java ${{ matrix.java }}
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-java@v4
+
+      - name: Set up Java ${{ matrix.java }}
+        uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: 17
-      - name: Check maven version
-        run: mvn -v; echo "** ls **"; pwd && ls -l
+          java-version: ${{ matrix.java }}
+
+      - name: Check Maven version and directory contents
+        run: |
+          mvn -v
+          echo "** ls **"
+          pwd && ls -l
 
       - name: Build with Maven
-        run: mvn -B install --file pom.xml
+        run: mvn -B install --file pom.xml