DRY java version numbers

Author: CamJN

.github/workflows/java.yml

@@ -14,6 +14,7 @@ jobs:
     strategy:
       matrix:
         java:
+        # when you edit this be sure to edit "release" job's too
           - '17' # EOL: 2026-09
           - '21' # EOL: 2028-09
          #- '22' # REL: 2024-03
@@ -53,6 +54,10 @@ jobs:
       packages: write
     needs: [ build ]
     runs-on: macos-latest
+    strategy:
+      matrix:
+        java:
+          - '17' # see above for versions
     steps:
     - uses: actions/checkout@v4
       with:
@@ -68,7 +73,7 @@ jobs:
     - name: Set up JDK
       uses: actions/setup-java@v4
       with:
-        java-version: '17'
+        java-version: ${{ matrix.java }}
         distribution: 'temurin'
         cache: maven
         check-latest: true
@@ -87,7 +92,7 @@ jobs:
     - name: Set up JDK ${{ matrix.java }}
       uses: actions/setup-java@v4
       with:
-        java-version: '17'
+        java-version: ${{ matrix.java }}
         distribution: 'temurin'
         cache: maven
         check-latest: true