Update java/operator/org.eclipse.theia.cloud.operator/src/main/java/o…

…rg/eclipse/theia/cloud/operator/util/K8sUtil.java

Co-authored-by: Lucas Koehler <lkoehler@eclipsesource.com>

java/operator/org.eclipse.theia.cloud.operator/src/main/java/org/eclipse/theia/cloud/operator/util/K8sUtil.java

@@ -177,8 +177,7 @@ private static <T extends HasMetadata, U, V extends Resource<T>> Optional<T> loa
             newItem.getMetadata().getLabels().putAll(labelsToAdd);
 
             // If the resource is a Deployment, also apply labels to the pod template metadata
-            if (newItem instanceof Deployment) {
-                Deployment deployment = (Deployment) newItem;
+            if (newItem instanceof Deployment deployment) {
                 if (deployment.getSpec().getTemplate().getMetadata().getLabels() == null) {
                     deployment.getSpec().getTemplate().getMetadata().setLabels(new HashMap<>());
                 }