src/java.base/share/classes/java/util/concurrent/ForkJoinTask.java

@@ -1372,11 +1372,13 @@
      * to be compliant with AbstractExecutorService constraints
      * when used in ForkJoinPool.
      */
     static final class AdaptedRunnable<T> extends ForkJoinTask<T>
         implements RunnableFuture<T> {
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         final Runnable runnable;
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         T result;
         AdaptedRunnable(Runnable runnable, T result) {
             if (runnable == null) throw new NullPointerException();
             this.runnable = runnable;
             this.result = result; // OK to set this even before completion

@@ -1394,10 +1396,11 @@
     /**
      * Adapter for Runnables without results.
      */
     static final class AdaptedRunnableAction extends ForkJoinTask<Void>
         implements RunnableFuture<Void> {
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         final Runnable runnable;
         AdaptedRunnableAction(Runnable runnable) {
             if (runnable == null) throw new NullPointerException();
             this.runnable = runnable;
         }

@@ -1413,10 +1416,11 @@
 
     /**
      * Adapter for Runnables in which failure forces worker exception.
      */
     static final class RunnableExecuteAction extends ForkJoinTask<Void> {
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         final Runnable runnable;
         RunnableExecuteAction(Runnable runnable) {
             if (runnable == null) throw new NullPointerException();
             this.runnable = runnable;
         }

@@ -1432,11 +1436,13 @@
     /**
      * Adapter for Callables.
      */
     static final class AdaptedCallable<T> extends ForkJoinTask<T>
         implements RunnableFuture<T> {
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         final Callable<? extends T> callable;
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         T result;
         AdaptedCallable(Callable<? extends T> callable) {
             if (callable == null) throw new NullPointerException();
             this.callable = callable;
         }