--- old/src/windows/classes/sun/awt/windows/WToolkit.java	2019-02-21 18:19:40.019111175 +0000
+++ new/src/windows/classes/sun/awt/windows/WToolkit.java	2019-02-21 18:19:39.849110065 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 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
@@ -68,6 +68,8 @@
 import java.util.Locale;
 import java.util.Map;
 import java.util.Properties;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 import sun.font.FontManager;
 import sun.font.FontManagerFactory;
@@ -828,20 +830,34 @@
         .paletteChanged();
     }
 
+    private static ExecutorService displayChangeExecutor;
+
     /*
      * Called from Toolkit native code when a WM_DISPLAYCHANGE occurs.
      * Have Win32GraphicsEnvironment execute the display change code on the
      * Event thread.
      */
     static public void displayChanged() {
-        EventQueue.invokeLater(new Runnable() {
-            @Override
-            public void run() {
-                ((Win32GraphicsEnvironment)GraphicsEnvironment
-                .getLocalGraphicsEnvironment())
-                .displayChanged();
+        final Runnable runnable = () -> {
+            Object lge = GraphicsEnvironment.getLocalGraphicsEnvironment();
+            if (lge instanceof DisplayChangedListener) {
+                ((DisplayChangedListener) lge).displayChanged();
             }
-        });
+        };
+        if (AppContext.getAppContext() != null) {
+            // Common case, standalone application
+            EventQueue.invokeLater(runnable);
+        } else {
+            if (displayChangeExecutor == null) {
+                // No synchronization, called on the Toolkit thread only
+                displayChangeExecutor = Executors.newFixedThreadPool(1, r -> {
+                    Thread t = Executors.defaultThreadFactory().newThread(r);
+                    t.setDaemon(true);
+                    return t;
+                });
+            }
+            displayChangeExecutor.submit(runnable);
+        }
     }
 
     /**