Uplift to Java 21

hal-core/src/se/hal/intf/HalAbstractControllerManager.java

@@ -1,3 +1,27 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2025 Ziver Koc
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
 package se.hal.intf;
 
 import zutil.ClassUtil;
@@ -43,7 +67,7 @@ public abstract class HalAbstractControllerManager<T extends HalAbstractControll
 
         // Instantiate autostart controllers, but only the first time
 
-        synchronized (autostartProcessed) {
+        synchronized (this) {
             if (!autostartProcessed) {
                 for (Iterator<Class<? extends HalAutostartController>> it = pluginManager.getClassIterator(HalAutostartController.class); it.hasNext(); ) {
                     Class controller = it.next();