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

@@ -75,10 +75,15 @@
  * @author Doug Lea
  */
 public abstract class AbstractExecutorService implements ExecutorService {
 
     /**
+     * Constructor for subclasses to call.
+     */
+    public AbstractExecutorService() {}
+
+    /**
      * Returns a {@code RunnableFuture} for the given runnable and default
      * value.
      *
      * @param runnable the runnable task being wrapped
      * @param value the default value for the returned future