src/java.base/share/classes/java/lang/ref/Finalizer.java

@@ -119,11 +119,11 @@
        The advantage of creating a fresh thread, however, is that it insulates
        invokers of these methods from a stalled or deadlocked finalizer thread.
      */
     private static void forkSecondaryFinalizer(final Runnable proc) {
         AccessController.doPrivileged(
-            new PrivilegedAction<Void>() {
+            new PrivilegedAction<>() {
                 public Void run() {
                     ThreadGroup tg = Thread.currentThread().getThreadGroup();
                     for (ThreadGroup tgn = tg;
                          tgn != null;
                          tg = tgn, tgn = tg.getParent());