[UNDERTOW-2523] Require a minimum of Java 17 in preparation for Jakar…

…ta Servlet 6.1

https://issues.redhat.com/browse/UNDERTOW-2523
Signed-off-by: James R. Perkins <jperkins@redhat.com>

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   build-all:
-    name: Compile (no tests) with JDK 11
+    name: Compile (no tests) with JDK 17
     runs-on: ubuntu-latest
     steps:
     - uses: n1hility/cancel-previous-runs@v2
@@ -23,11 +23,11 @@ jobs:
         restore-keys: |
             m2-
     - uses: actions/checkout@v2
-    - name: Set up JDK 11
+    - name: Set up JDK 17
       uses: actions/setup-java@v3
       with:
         distribution: temurin
-        java-version: 11
+        java-version: 17
     - name: Generate settings.xml for Maven Builds
       uses: whelk-io/maven-settings-xml-action@v20
       with:
@@ -60,7 +60,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
         module: [core]
-        jdk: [11, 17, 21]
+        jdk: [17, 21]
         openjdk_impl: [ temurin ]
     steps:
     - name: Update hosts - linux
@@ -122,7 +122,7 @@ jobs:
         os: [ubuntu-latest]
         module: [core, servlet, websockets-jsr]
         proxy: ['-Pproxy', '']
-        jdk: [11]
+        jdk: [17]
     steps:
     - name: Update hosts - linux
       if: matrix.os == 'ubuntu-latest'

pom.xml

@@ -105,8 +105,9 @@
         <version.bundle.plugin>5.1.1</version.bundle.plugin>
 
         <version.jmh>1.21</version.jmh>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.release>17</maven.compiler.release>
+        <maven.compiler.source>${maven.compiler.release}</maven.compiler.source>
+        <maven.compiler.target>${maven.compiler.release}</maven.compiler.target>
         <maven.javadoc.plugin.quiet>true</maven.javadoc.plugin.quiet>
         <maven.compiler.showDeprecation>false</maven.compiler.showDeprecation>
         <maven.compiler.showWarnings>false</maven.compiler.showWarnings>