Java 17 features (N-S) (#15565)

- 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

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

bundles/org.openhab.binding.smsmodem/src/main/java/org/openhab/binding/smsmodem/internal/actions/SMSModemActions.java

@@ -68,8 +68,8 @@ public class SMSModemActions implements ThingActions {
 
     public static void sendSMS(@Nullable ThingActions actions, @Nullable String recipient, @Nullable String message,
             @Nullable String encoding) {
-        if (actions instanceof SMSModemActions) {
-            ((SMSModemActions) actions).sendSMS(recipient, message, encoding);
+        if (actions instanceof SMSModemActions smsModemActions) {
+            smsModemActions.sendSMS(recipient, message, encoding);
         } else {
             throw new IllegalArgumentException("Instance is not an SMSModemActions class.");
         }

bundles/org.openhab.binding.smsmodem/src/main/java/org/openhab/binding/smsmodem/internal/handler/SMSConversationHandler.java

@@ -65,8 +65,8 @@ public class SMSConversationHandler extends BaseThingHandler {
                         thing.getUID(), getRecipient());
             }
             ThingHandler handler = bridge.getHandler();
-            if (handler instanceof SMSModemBridgeHandler) {
-                this.bridgeHandler = (SMSModemBridgeHandler) handler;
+            if (handler instanceof SMSModemBridgeHandler smsModemBridgeHandler) {
+                this.bridgeHandler = smsModemBridgeHandler;
             } else {
                 throw new ConfigurationException("No available bridge handler found for SMSConversation {} bridge {} .",
                         thing.getUID(), bridge.getUID());