Remove support for OpenJDK 11 on the server side

closes #15014

.github/workflows/ci.yml

@@ -151,7 +151,7 @@ jobs:
     strategy:
       matrix:
         dist: [temurin]
-        version: [11, 19]
+        version: [19]
       fail-fast: false
     steps:
       - uses: actions/checkout@v3

crypto/fips1402/pom.xml

@@ -31,9 +31,9 @@
     <description/>
 
     <properties>
-        <maven.compiler.release>11</maven.compiler.release>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.release>17</maven.compiler.release>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
     </properties>
 
     <dependencies>

distribution/api-docs-dist/pom.xml

@@ -31,7 +31,7 @@
 
     <properties>
         <javadoc.branding>Keycloak ${project.version}</javadoc.branding>
-        <maven.compiler.release>11</maven.compiler.release>
+        <maven.compiler.release>17</maven.compiler.release>
     </properties>
 
     <dependencies>

docs/documentation/release_notes/topics/22_0_0.adoc

@@ -1,3 +1,7 @@
+= Java 11 support for Keycloak server removed
+
+Running the Keycloak server with Java 11 is removed now. Java 11 was deprecated in Keycloak 21 with the announced plan to be removed in Keycloak 22.
+
 = Transition from Java EE to Jakarta EE
 
 Keycloak migrated its codebase from Java EE (Enterprise Edition) to its successor Jakarta EE, which brings various changes into Keycloak.

docs/maven-plugin/pom.xml

@@ -32,9 +32,9 @@
     <packaging>maven-plugin</packaging>
 
     <properties>
-        <maven.compiler.release>11</maven.compiler.release>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.release>17</maven.compiler.release>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
     </properties>
 
     <dependencies>

federation/ldap/pom.xml

@@ -30,9 +30,9 @@
     <description />
 
     <properties>
-        <maven.compiler.release>11</maven.compiler.release>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.release>17</maven.compiler.release>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
     </properties>
 
     <dependencies>

federation/sssd/pom.xml

@@ -10,9 +10,9 @@
     <modelVersion>4.0.0</modelVersion>
 
     <properties>
-        <maven.compiler.release>11</maven.compiler.release>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.release>17</maven.compiler.release>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
     </properties>
 
     <artifactId>keycloak-sssd-federation</artifactId>
@@ -45,6 +45,27 @@
                     </archive>
                 </configuration>
             </plugin>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>compile-java16</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                        <configuration>
+                            <release>16</release>
+                            <buildDirectory>${project.build.directory}</buildDirectory>
+                            <compileSourceRoots>${project.basedir}/src/main/java16</compileSourceRoots>
+                            <outputDirectory>${project.build.directory}/classes/META-INF/versions/16</outputDirectory>
+                            <additionalClasspathElements>
+                                <additionalClasspathElement>${project.build.outputDirectory}</additionalClasspathElement>
+                            </additionalClasspathElements>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>
 
@@ -91,38 +112,4 @@
         </dependency>
     </dependencies>
 
-    <profiles>
-        <profile>
-            <id>jdk-16</id>
-            <activation>
-                <jdk>[16,)</jdk>
-            </activation>
-            <build>
-                <plugins>
-                    <plugin>
-                        <artifactId>maven-compiler-plugin</artifactId>
-                        <executions>
-                            <execution>
-                                <id>compile-java16</id>
-                                <phase>compile</phase>
-                                <goals>
-                                    <goal>compile</goal>
-                                </goals>
-                                <configuration>
-                                    <release>16</release>
-                                    <buildDirectory>${project.build.directory}</buildDirectory>
-                                    <compileSourceRoots>${project.basedir}/src/main/java16</compileSourceRoots>
-                                    <outputDirectory>${project.build.directory}/classes/META-INF/versions/16</outputDirectory>
-                                    <additionalClasspathElements>
-                                        <additionalClasspathElement>${project.build.outputDirectory}</additionalClasspathElement>
-                                    </additionalClasspathElements>
-                                </configuration>
-                            </execution>
-                        </executions>
-                    </plugin>
-                </plugins>
-            </build>
-        </profile>
-    </profiles>
-
 </project>

pom.xml

@@ -191,6 +191,7 @@
         <testcontainers.version>1.17.5</testcontainers.version>
 
         <!-- Maven Plugins -->
+        <maven.plugin.plugin.version>3.9.0</maven.plugin.plugin.version>
         <replacer.plugin.version>1.4.1</replacer.plugin.version>
         <jboss.as.plugin.version>7.5.Final</jboss.as.plugin.version>
         <jmeter.plugin.version>1.9.0</jmeter.plugin.version>
@@ -1962,6 +1963,11 @@
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-jar-plugin</artifactId>
                 </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-plugin-plugin</artifactId>
+                    <version>${maven.plugin.plugin.version}</version>
+                </plugin>
                 <plugin>
                     <groupId>com.google.code.maven-replacer-plugin</groupId>
                     <artifactId>maven-replacer-plugin</artifactId>

quarkus/pom.xml

@@ -41,9 +41,9 @@
 
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.plugin.version>3.8.1</maven.compiler.plugin.version>
-        <maven.compiler.release>11</maven.compiler.release>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.release>17</maven.compiler.release>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
     </properties>
 
     <dependencyManagement>

server-spi/pom.xml

@@ -31,9 +31,9 @@
     <description/>
 
     <properties>
-        <maven.compiler.release>11</maven.compiler.release>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.release>17</maven.compiler.release>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
     </properties>
 
     <dependencies>