support JDK 11+ (#527)

Author: jperedadnr

.github/workflows/build.yml

@@ -14,11 +14,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup Java 21 and Apache Maven
+      - name: Setup Java 11 and Apache Maven
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 21
+          java-version: 11
           server-id: ossrh
           server-username: MAVEN_USERNAME
           server-password: MAVEN_CENTRAL_TOKEN

.github/workflows/release.yml

@@ -14,11 +14,11 @@ jobs:
           fetch-depth: 5
           persist-credentials: false
 
-      - name: Setup Java 21 and Apache Maven
+      - name: Setup Java 11 and Apache Maven
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 21
+          java-version: 11
           server-id: ossrh
           server-username: MAVEN_USERNAME
           server-password: MAVEN_CENTRAL_TOKEN
@@ -45,7 +45,7 @@ jobs:
     needs: [ release ]
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 5
           persist-credentials: false

pom.xml

@@ -42,7 +42,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.resource>21</maven.compiler.resource>
+    <maven.compiler.release>11</maven.compiler.release>
     <source.plugin.version>3.3.0</source.plugin.version>
     <javadoc.plugin.version>3.5.0</javadoc.plugin.version>
     <gpg.plugin.version>3.1.0</gpg.plugin.version>
@@ -112,10 +112,6 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.13.0</version>
-        <configuration>
-          <source>21</source>
-          <target>21</target>
-        </configuration>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>