8250221: Address use of default constructors in java.logging

Reviewed-by: lancea

src/java.logging/share/classes/java/util/logging/ErrorManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2004, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 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
@@ -39,6 +39,11 @@ package java.util.logging;
 public class ErrorManager {
    private boolean reported = false;
 
+    /**
+     * Create an {@code ErrorManager}.
+     */
+    public ErrorManager() {}
+
     /*
      * We declare standard error codes for important categories of errors.
      */

src/java.logging/share/classes/java/util/logging/SimpleFormatter.java

@@ -65,6 +65,11 @@ public class SimpleFormatter extends Formatter {
     private final String format =
         SurrogateLogger.getSimpleFormat(SimpleFormatter::getLoggingProperty);
 
+    /**
+     * Create a {@code SimpleFormatter}.
+     */
+    public SimpleFormatter() {}
+
     /**
      * Format the given LogRecord.
      * <p>