Revert to Java 8

.github/workflows/CI.yml

@@ -19,11 +19,11 @@ jobs:
       run: sudo mkdir -p /usr/share/man/man1/ && sudo apt update && sudo apt install -y maven python3 hub
 
     - uses: actions/checkout@v4
-    - name: Set up JDK 21
+    - name: Set up JDK 8
       uses: actions/setup-java@v4
       with:
         distribution: 'zulu'
-        java-version: '21'
+        java-version: '8'
     - name: Build with Maven
       run: mvn clean resources:resources assembly:assembly -DdescriptorId=jar-with-dependencies
 

pom.xml

@@ -12,8 +12,8 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>21</maven.compiler.source>
-    <maven.compiler.target>21</maven.compiler.target>
+    <maven.compiler.source>8</maven.compiler.source>
+    <maven.compiler.target>8</maven.compiler.target>
   </properties>
 
   <dependencies></dependencies>
@@ -64,13 +64,26 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-assembly-plugin</artifactId>
+          <version>3.6.0</version>
           <configuration>
             <archive>
               <manifest>
                 <mainClass>com.aebd.jMetro.gui.JMetro</mainClass>
               </manifest>
             </archive>
+            <descriptorRefs>
+              <descriptorRef>jar-with-dependencies</descriptorRef>
+            </descriptorRefs>
           </configuration>
+          <executions>
+            <execution>
+              <id>make-assembly</id> <!-- this is used for inheritance merges -->
+              <phase>package</phase> <!-- bind to the packaging phase -->
+              <goals>
+                <goal>single</goal>
+              </goals>
+            </execution>
+          </executions>
         </plugin>
       </plugins>
     </pluginManagement>