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.xmltv/src/main/java/org/openhab/binding/xmltv/internal/discovery/XmlTVDiscoveryService.java

@@ -81,8 +81,8 @@ public class XmlTVDiscoveryService extends AbstractDiscoveryService implements T
 
     @Override
     public void setThingHandler(ThingHandler handler) {
-        if (handler instanceof XmlTVHandler) {
-            this.handler = (XmlTVHandler) handler;
+        if (handler instanceof XmlTVHandler tvHandler) {
+            this.handler = tvHandler;
         }
     }
 

bundles/org.openhab.binding.xmltv/src/main/java/org/openhab/binding/xmltv/internal/handler/XmlTVHandler.java

@@ -12,7 +12,6 @@
  */
 package org.openhab.binding.xmltv.internal.handler;
 
-import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.time.Instant;
@@ -77,7 +76,7 @@ public class XmlTVHandler extends BaseBridgeHandler {
             XMLStreamReader xsr = null;
             try {
                 // This can take some seconds depending upon weight of the XmlTV source file
-                xsr = xif.createXMLStreamReader(new FileInputStream(new File(config.filePath)), config.encoding);
+                xsr = xif.createXMLStreamReader(new FileInputStream(config.filePath), config.encoding);
                 try {
                     Tv xmlFile = (Tv) unmarshaller.unmarshal(xsr);
                     // Remove all finished programmes

bundles/org.openhab.binding.xmltv/src/main/java/org/openhab/binding/xmltv/internal/jaxb/Programme.java

@@ -77,8 +77,7 @@ public class Programme {
     }
 
     private long iso860DateToEpoch(String date) {
-        long epoch = ZonedDateTime.parse(date, XMLTV_DATE_FORMAT).toInstant().toEpochMilli();
-        return epoch;
+        return ZonedDateTime.parse(date, XMLTV_DATE_FORMAT).toInstant().toEpochMilli();
     }
 
     public List<Icon> getIcons() {