--- old/src/java.base/share/classes/java/util/concurrent/CopyOnWriteArraySet.java	2021-01-05 09:10:42.553379300 -0800
+++ new/src/java.base/share/classes/java/util/concurrent/CopyOnWriteArraySet.java	2021-01-05 09:10:42.041383313 -0800
@@ -69,7 +69,7 @@
  * perform some action upon state updates.
  *
  * <pre> {@code
- * class Handler { void handle(); ... }
+ * class Handler { void handle() { ... } }
  *
  * class X {
  *   private final CopyOnWriteArraySet<Handler> handlers