Java 17 features (H-M) (#15520)

- add missing @override
- Java style array syntax
- remove redundant modifiers
- always move String constants to left side in comparisons
- simplify lambda expressions and return statements
- use replace instead of replaceAll w/o regex
- instanceof matching and multiline strings
- remove null check before instanceof

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

bundles/org.openhab.binding.juicenet/src/main/java/org/openhab/binding/juicenet/internal/discovery/JuiceNetDiscoveryService.java

@@ -68,8 +68,7 @@ public class JuiceNetDiscoveryService extends AbstractDiscoveryService
 
     @Override
     public void setThingHandler(@Nullable ThingHandler handler) {
-        if (handler instanceof JuiceNetBridgeHandler) {
-            JuiceNetBridgeHandler bridgeHandler = (JuiceNetBridgeHandler) handler;
+        if (handler instanceof JuiceNetBridgeHandler bridgeHandler) {
             bridgeHandler.setDiscoveryService(this);
             this.bridgeHandler = bridgeHandler;
         } else {

bundles/org.openhab.binding.juicenet/src/main/java/org/openhab/binding/juicenet/internal/handler/JuiceNetBridgeHandler.java

@@ -15,9 +15,9 @@ package org.openhab.binding.juicenet.internal.handler;
 import static org.openhab.binding.juicenet.internal.JuiceNetBindingConstants.*;
 
 import java.util.Collection;
-import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
+import java.util.Set;
 import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.TimeUnit;
 
@@ -116,7 +116,7 @@ public class JuiceNetBridgeHandler extends BaseBridgeHandler {
      */
     @Override
     public Collection<Class<? extends ThingHandlerService>> getServices() {
-        return Collections.singleton(JuiceNetDiscoveryService.class);
+        return Set.of(JuiceNetDiscoveryService.class);
     }
 
     public void handleApiException(Exception e) {