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.irtrans/src/main/java/org/openhab/binding/irtrans/internal/IrCommand.java

@@ -315,7 +315,7 @@ public class IrCommand {
      * @return the byte buffer in Hex format
      */
     public ByteBuffer toHEXByteBuffer() {
-        byte hexDigit[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+        byte[] hexDigit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
 
         ByteBuffer byteBuffer = toByteBuffer();
         byte[] toConvert = new byte[byteBuffer.limit()];