Use Collection.isEmpty (#10525)

Fixes 47 SAT UseCollectionIsEmpty findings.

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.binding.ojelectronics/src/main/java/org/openhab/binding/ojelectronics/internal/ThermostatHandler.java

@@ -131,7 +131,7 @@ public class ThermostatHandler extends BaseThingHandler {
      */
     public @Nullable Thermostat tryHandleAndGetUpdatedThermostat() {
         final LinkedList<SimpleImmutableEntry<String, Command>> updatedValues = this.updatedValues;
-        if (updatedValues.size() == 0) {
+        if (updatedValues.isEmpty()) {
             return null;
         }
         this.updatedValues = new LinkedList<>();