TEDEFO-5287 Build and target Java 21 instead of Java 11

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v4
         with:
-          java-version: '11'
-          distribution: 'adopt'
+          java-version: '21'
+          distribution: 'temurin'
       - name: Build and run unit tests
         run: mvn --batch-mode clean install

.github/workflows/javadoc.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v4
         with:
-          java-version: '11'
-          distribution: 'adopt'
+          java-version: '21'
+          distribution: 'temurin'
       - name: Check javadoc
         run: mvn --batch-mode clean test-compile javadoc:javadoc javadoc:test-javadoc

.github/workflows/publish.yml

@@ -27,8 +27,8 @@ jobs:
       - name: Set up Java for publishing to Maven Central Repository
         uses: actions/setup-java@v4
         with:
-          java-version: '11'
-          distribution: 'adopt'
+          java-version: '21'
+          distribution: 'temurin'
           server-id: central
           server-username: MAVEN_USERNAME
           server-password: MAVEN_PASSWORD

README.md

@@ -12,7 +12,7 @@ This library provides a set of classes that can be used to solve some common "pr
 
 ## Using the eForms Core Library
 
-The eForms Core library requires Java 11 or later.
+The eForms Core library requires Java 21 or later.
 
 It is available as a Maven package on Maven Central and can be used by adding the following to the project's `pom.xml`.
 
@@ -34,7 +34,7 @@ Replace `${eforms-core.version}` with the latest version available, or define th
 
 Requirements:
 
-* Java 11 or higher
+* Java 21 or higher
 * Maven 3.8, other versions probably also work
 
 Execute the following on the root folder of this project:

pom.xml

@@ -3,7 +3,7 @@
 
   <groupId>eu.europa.ted.eforms</groupId>
   <artifactId>eforms-core-java</artifactId>
-  <version>1.10.0-SNAPSHOT</version>
+  <version>2.0.0-SNAPSHOT</version>
 
   <name>eForms Core Library</name>
   <description>API and tools for eForms applications.</description>
@@ -37,9 +37,8 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
     <!-- Java compiler -->
-    <java.version>11</java.version>
-    <maven.compiler.source>${java.version}</maven.compiler.source>
-    <maven.compiler.target>${java.version}</maven.compiler.target>
+    <java.version>21</java.version>
+    <maven.compiler.release>${java.version}</maven.compiler.release>
 
     <!-- Versions - Third-party libraries -->
     <version.antlr4>4.13.1</version.antlr4>
@@ -61,10 +60,10 @@
 
     <!-- Versions - Plugins -->
     <version.build-helper.plugin>3.3.0</version.build-helper.plugin>
-    <version.compiler.plugin>3.10.1</version.compiler.plugin>
+    <version.compiler.plugin>3.13.0</version.compiler.plugin>
     <version.gpg.plugin>1.5</version.gpg.plugin>
     <version.install.plugin>2.5.2</version.install.plugin>
-    <version.jacoco.plugin>0.8.10</version.jacoco.plugin>
+    <version.jacoco.plugin>0.8.12</version.jacoco.plugin>
     <version.japicmp.plugin>0.20.0</version.japicmp.plugin>
     <version.javadoc.plugin>3.4.0</version.javadoc.plugin>
     <version.source.plugin>3.2.1</version.source.plugin>
@@ -356,6 +355,10 @@
   <build>
     <pluginManagement>
       <plugins>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>${version.compiler.plugin}</version>
+        </plugin>
         <plugin>
           <artifactId>maven-surefire-plugin</artifactId>
           <version>${version.surefire.plugin}</version>