Added matrix

Author: alcides

.github/workflows/maven.yml

@@ -16,15 +16,17 @@ on:
 
 jobs:
   build:
-
-    runs-on: ubuntu-20.04
-
+    name: Maven test on  ${{ matrix.Java }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [ '17', '18', '19', '20']
     steps:
     - uses: actions/checkout@v3
     - name: Set up JDK 20
       uses: actions/setup-java@v3
       with:
-        java-version: '20'
+        java-version: ${{ matrix.java }}
         distribution: 'adopt'
         cache: maven
     - name: Build with Maven