--- a/src/java.management/share/classes/java/lang/management/ThreadMXBean.java	Wed May 29 11:55:30 2019 -0400
+++ b/src/java.management/share/classes/java/lang/management/ThreadMXBean.java	Thu May 30 17:28:26 2019 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -49,7 +49,7 @@
  * It can be obtained by calling the
  * {@link PlatformManagedObject#getObjectName} method.
  *
- * <h3>Thread ID</h3>
+ * <h2>Thread ID</h2>
  * Thread ID is a positive long value returned by calling the
  * {@link java.lang.Thread#getId} method for a thread.
  * The thread ID is unique during its lifetime.  When a thread
@@ -58,7 +58,7 @@
  * <p> Some methods in this interface take a thread ID or an array
  * of thread IDs as the input parameter and return per-thread information.
  *
- * <h3>Thread CPU time</h3>
+ * <h2>Thread CPU time</h2>
  * A Java virtual machine implementation may support measuring
  * the CPU time for the current thread, for any thread, or for no threads.
  *
@@ -83,7 +83,7 @@
  * Enabling thread CPU measurement could be expensive in some
  * Java virtual machine implementations.
  *
- * <h3>Thread Contention Monitoring</h3>
+ * <h2>Thread Contention Monitoring</h2>
  * Some Java virtual machines may support thread contention monitoring.
  * When thread contention monitoring is enabled, the accumulated elapsed
  * time that the thread has blocked for synchronization or waited for
@@ -96,7 +96,7 @@
  * {@link #setThreadContentionMonitoringEnabled} method can be used to enable
  * thread contention monitoring.
  *
- * <h3>Synchronization Information and Deadlock Detection</h3>
+ * <h2>Synchronization Information and Deadlock Detection</h2>
  * Some Java virtual machines may support monitoring of
  * {@linkplain #isObjectMonitorUsageSupported object monitor usage} and
  * {@linkplain #isSynchronizerUsageSupported ownable synchronizer usage}.