8250583: Address reliance on default constructors in java.management

Reviewed-by: alanb

src/java.management/share/classes/javax/management/AttributeChangeNotificationFilter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2020, 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
@@ -50,6 +50,10 @@ public class AttributeChangeNotificationFilter implements NotificationFilter {
      */
     private Vector<String> enabledAttributes = new Vector<String>();
 
+    /**
+     * Constructs an {@code AttributeChangeNotificationFilter}.
+     */
+    public AttributeChangeNotificationFilter() {}
 
     /**
      * Invoked before sending the specified notification to the listener.

src/java.management/share/classes/javax/management/DefaultLoaderRepository.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2020, 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
@@ -50,6 +50,11 @@ import javax.management.loading.ClassLoaderRepository;
  */
 @Deprecated
 public class DefaultLoaderRepository {
+    /**
+     * Constructs an {@code DefaultLoaderRepository}.
+     */
+    public DefaultLoaderRepository() {}
+
     /**
      * Go through the list of class loaders and try to load the requested class.
      * The method will stop as soon as the class is found. If the class

src/java.management/share/classes/javax/management/NotificationFilterSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2020, 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
@@ -68,6 +68,11 @@ public class NotificationFilterSupport implements NotificationFilter {
     private List<String> enabledTypes = new Vector<String>();
 
 
+    /**
+     * Constructs a {@code NotificationFilterSupport}.
+     */
+    public NotificationFilterSupport() {}
+
     /**
      * Invoked before sending the specified notification to the listener.
      * <BR>This filter compares the type of the specified notification with each enabled type.

src/java.management/share/classes/javax/management/QueryEval.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2020, 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
@@ -41,6 +41,11 @@ public abstract class QueryEval implements Serializable {
     private static ThreadLocal<MBeanServer> server =
         new InheritableThreadLocal<MBeanServer>();
 
+    /**
+     * Constructor for subclasses to call.
+     */
+    public QueryEval() {}
+
     /**
      * <p>Sets the MBean server on which the query is to be performed.
      * The setting is valid for the thread performing the set.

src/java.management/share/classes/javax/management/loading/DefaultLoaderRepository.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2020, 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
@@ -55,6 +55,11 @@ import javax.management.MBeanServerFactory;
 @Deprecated
 public class DefaultLoaderRepository {
 
+    /**
+     * Constructs a {@code DefaultLoaderRepository}.
+     */
+    public DefaultLoaderRepository() {}
+
     /**
      * Go through the list of class loaders and try to load the requested
      * class.

src/java.management/share/classes/javax/management/monitor/Monitor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2020, 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
@@ -76,6 +76,11 @@ public abstract class Monitor
     extends NotificationBroadcasterSupport
     implements MonitorMBean, MBeanRegistration {
 
+    /**
+     * Constructor for subclasses to call.
+     */
+    public Monitor() {}
+
     /*
      * ------------------------------------------
      *  PACKAGE CLASSES

src/java.management/share/classes/javax/management/relation/RoleStatus.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2020, 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
@@ -33,6 +33,12 @@ package javax.management.relation;
  */
 public class RoleStatus {
 
+    /**
+     * Do not call.
+     */
+    @Deprecated(since="16", forRemoval=true)
+    public RoleStatus() {}
+
     //
     // Possible problems
     //