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.hdanywhere/src/main/java/org/openhab/binding/hdanywhere/internal/handler/Mhub4K431Handler.java

@@ -143,7 +143,7 @@ public class Mhub4K431Handler extends BaseThingHandler {
 
                 String content = "{CMD=";
                 content = content + command.toString() + "B";
-                content = content + String.valueOf(outputPort) + ".";
+                content = content + outputPort + ".";
 
                 InputStream stream = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));
 

bundles/org.openhab.binding.hdanywhere/src/main/java/org/openhab/binding/hdanywhere/internal/handler/MultiroomPlusHandler.java

@@ -114,11 +114,11 @@ public class MultiroomPlusHandler extends BaseThingHandler {
                 String httpMethod = "GET";
                 String url = "http://" + host + "/switch.cgi?command=3&data0=";
 
-                url = url + String.valueOf(outputPort) + "&data1=";
+                url = url + outputPort + "&data1=";
                 url = url + command.toString() + "&checksum=";
 
                 int checksum = 3 + outputPort + sourcePort;
-                url = url + String.valueOf(checksum);
+                url = url + checksum;
 
                 try {
                     HttpUtil.executeUrl(httpMethod, url, null, null, null, timeout);