Java 17 features (T-Z) (#15576)

- 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.ventaair/src/main/java/org/openhab/binding/ventaair/internal/Communicator.java

@@ -110,7 +110,6 @@ public class Communicator {
                 }
             }
             br.close();
-            socket.close();
         } catch (IOException e) {
             callback.communicationProblem();
         }
@@ -150,7 +149,6 @@ public class Communicator {
             logger.debug("sendingArray: {}", Arrays.toString(dataToSend));
 
             output.write(dataToSend);
-            socket.close();
         }
     }
 

bundles/org.openhab.binding.ventaair/src/main/java/org/openhab/binding/ventaair/internal/VentaThingHandler.java

@@ -92,20 +92,20 @@ public class VentaThingHandler extends BaseThingHandler {
                 }
                 break;
             case VentaAirBindingConstants.CHANNEL_FAN_SPEED:
-                if (command instanceof DecimalType) {
-                    int fanStage = ((DecimalType) command).intValue();
+                if (command instanceof DecimalType decimalCommand) {
+                    int fanStage = decimalCommand.intValue();
                     dispatchActionToDevice(new FanAction(fanStage));
                 }
                 break;
             case VentaAirBindingConstants.CHANNEL_TARGET_HUMIDITY:
-                if (command instanceof DecimalType) {
-                    int targetHumidity = ((DecimalType) command).intValue();
+                if (command instanceof DecimalType decimalCommand) {
+                    int targetHumidity = decimalCommand.intValue();
                     dispatchActionToDevice(new HumidityAction(targetHumidity));
                 }
                 break;
             case VentaAirBindingConstants.CHANNEL_TIMER:
-                if (command instanceof DecimalType) {
-                    int timer = ((DecimalType) command).intValue();
+                if (command instanceof DecimalType decimalCommand) {
+                    int timer = decimalCommand.intValue();
                     dispatchActionToDevice(new TimerAction(timer));
                 }
                 break;

bundles/org.openhab.binding.ventaair/src/main/java/org/openhab/binding/ventaair/internal/discovery/VentaDeviceDiscovery.java

@@ -18,7 +18,6 @@ import java.net.DatagramSocket;
 import java.net.SocketException;
 import java.nio.charset.StandardCharsets;
 import java.time.Duration;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.Set;
 import java.util.concurrent.ScheduledFuture;
@@ -53,8 +52,8 @@ import com.google.gson.JsonSyntaxException;
 @Component(service = DiscoveryService.class, configurationPid = "discovery.ventaair")
 public class VentaDeviceDiscovery extends AbstractDiscoveryService {
     private static final String REPRESENTATION_PROPERTY = "macAddress";
-    private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Collections
-            .singleton(VentaAirBindingConstants.THING_TYPE_LW60T);
+    private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Set
+            .of(VentaAirBindingConstants.THING_TYPE_LW60T);
     // defined as int, because AbstractDiscoveryService wants and int and not long as provided by Duration.getSeconds()
     private static final int MANUAL_DISCOVERY_TIME = 30;
     private static final Duration TIME_BETWEEN_SCANS = Duration.ofSeconds(30);