Use @Nullable Void in TaskCallback#from

sdeleuze · sdeleuze · commit fb6291598657 · 2026-01-27T15:10:56.000+01:00
Currently blocked by a potential NullAway issue.
diff --git a/spring-core/src/main/java/org/springframework/core/retry/support/RetryTask.java b/spring-core/src/main/java/org/springframework/core/retry/support/RetryTask.java
@@ -197,7 +197,7 @@ public static Runnable wrap(Runnable task, RetryPolicy retryPolicy) {
 	 * but declaring the {@link RetryOperations} interface for flexibility)
 	 */
 	public static Runnable wrap(Runnable task, RetryOperations retryTemplate) {
-		RetryTask<Void, RuntimeException> rt = new RetryTask<>(TaskCallback.from(task), retryTemplate) {
+		RetryTask<@Nullable Void, RuntimeException> rt = new RetryTask<>(TaskCallback.from(task), retryTemplate) {
 			@Override
 			public String getName() {
 				return task.getClass().getName();
diff --git a/spring-core/src/main/java/org/springframework/core/task/TaskCallback.java b/spring-core/src/main/java/org/springframework/core/task/TaskCallback.java
@@ -54,8 +54,7 @@ static <V> TaskCallback<V, Exception> from(Callable<V> task) {
 	 * Derive a {@link TaskCallback} from the given {@link Runnable}.
 	 * @since 7.0.4
 	 */
-	@SuppressWarnings("NullAway")
-	static TaskCallback<Void, RuntimeException> from(Runnable task) {
+	static TaskCallback<@Nullable Void, RuntimeException> from(Runnable task) {
 		return () -> {
 			task.run();
 			return null;
